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{{short description|Japanese manga series and its adaptations}}
'''Spiral: The Bonds of Reasoning''' (Japanese: テンプレート:日本語, ''Spiral: Suiri no Kizuna'') is a Japanese [[manga]] series written by [[Kyo Shirodaira]] and [[illustrated]] by [[Eita Mizuno]]. Initially serialized by Enix and later by Square Enix, the series ran in ''Monthly Shōnen Gangan'' from 1999 to 2005, spanning 15 tankōbon volumes. The story centers on Ayumu Narumi, a high school student, as he investigates the enigmatic Blade Children—gifted individuals with cat-like eyes and the absence of a seventh rib bone, who are said to be cursed.
{{distinguish|text=''[[Uzumaki]]'', whose title translates to ''Spiral''}}
{{Use mdy dates|date=March 2024}}
{{Infobox animanga/Header
| image          = Spiral, Volume 1.jpg
| caption        = The first volume of ''Spiral: The Bonds of Reasoning'' as released by Square Enix
| ja_kanji        = スパイラル―推理の絆
| ja_romaji      = Supairaru: Suiri no Kizuna
| genre          = [[Mystery fiction|Mystery]], [[Thriller (genre)|thriller]]
}}
{{Infobox animanga/Print
| type            = manga
| author          = Kyo Shirodaira
| illustrator    = [[Eita Mizuno]]
| publisher      = [[Square Enix]]
| publisher_en    = {{English manga publisher|NA={{ubl|[[Tokyopop]] (former)|[[Yen Press]] (current)}}}}
| demographic    = {{transl|ja|[[Shōnen manga|Shōnen]]}}
| magazine        = [[Monthly Shōnen Gangan]]
| first          = 1999
| last            = 2005
| volumes        = 15
| volume_list    =
}}
{{Infobox animanga/Print
| type            = manga
| title          = Spiral: Alive
| author          = Kyo Shirodaira
| illustrator    = Eita Mizuno
| publisher      = [[Square Enix]]
| demographic    = {{transl|ja|Shōnen}}
| magazine        = {{ubl|[[Gangan Wing]]|[[Monthly Shōnen Gangan|Shōnen Gangan]]}}
| first          = May 2001
| last            = June 2008
| volumes         = 5
| volume_list    =
}}
{{Infobox animanga/Video
| type            = tv series
| director        = Shingo Kaneko
| producer        =
| writer          = [[Natsuko Takahashi]]
| music          = [[Akira Mitake]]
| studio          = [[J.C.Staff]]
| licensee        = {{English anime licensee|NA=[[Funimation]] (expired)|UK=[[MVM Films]]|AUS=[[Madman Entertainment]]}}
| network        = [[TV Tokyo]]
| network_en      = {{English anime network |US= [[Funimation Channel]], Colours TV}}
| first          = October 1, 2002
| last            = March 25, 2003
| episodes        = 25
| episode_list    = #Anime
}}
{{Infobox animanga/Footer}}


{{nihongo|'''''Spiral: The Bonds of Reasoning'''''|スパイラル〜推理の絆|Supairaru: Suiri no Kizuna|lead=yes}} is a Japanese [[manga]] series written by Kyo Shirodaira and illustrated by [[Eita Mizuno]]. It was published by [[Enix]] and then [[Square Enix]] in ''[[Monthly Shōnen Gangan]]'' from 1999 to 2005 and collected in 15 [[tankōbon|bound volumes]]. The series focuses on [[Ayumu Narumi]] and his efforts to solve the mystery of the Blade Children, cursed geniuses with cat-like eyes lacking a seventh rib bone. A prequel series by Shirodaira and Mizuno, called '''''Spiral: Alive''''', was published in ''[[Gangan Wing]]'' and ''Monthly Shōnen Gangan'' from April 2004 to June 2008 and collected in five bound volumes.
A prequel, ''[[Spiral: Alive]]'', also created by Shirodaira and Mizuno, was serialized in ''[[Gangan Wing]]'' and later ''Monthly Shōnen Gangan'' from April 2004 to June 2008, culminating in five collected volumes.


''Spiral: The Bonds of Reasoning'' was originally licensed for an English language release in [[North America]] by [[Tokyopop]], however the company dropped the series. [[Yen Press]] acquired the license for Northern American release, and published the first volume in October 2007.
In North America, ''Spiral: The Bonds of Reasoning'' was initially licensed for English publication by Tokyopop, but the company discontinued the series. Yen Press subsequently acquired the rights and released the first volume in October 2007.


The series was adapted as a twenty-five episode [[anime]] television series broadcast on [[TV Tokyo]] from October 1, 2002, until March 25, 2003. The anime is licensed in [[DVD region code#1|Region 1]] by [[Funimation]], who released it on DVD and broadcast it on the [[Funimation Channel]], along with the programming block on Colours TV in 2006. The series was also adapted as four [[light novel]]s and a series of CD dramas.
The series was adapted into a 25-episode anime television series, which aired on TV Tokyo from October 1, 2002, to March 25, 2003. The anime was licensed in Region 1 by Funimation, which distributed it on DVD and broadcast it on the Funimation Channel, as well as on the Colours TV programming block in 2006. Additionally, the franchise expanded into four light novels and a series of CD dramas.
{{TOC limit|3}}
 
== Plot ==


==Plot==
===''Spiral: The Bonds of Reasoning''===
===''Spiral: The Bonds of Reasoning''===
About two years ago, [[Ayumu Narumi]]'s older brother [[List of Spiral characters#Main characters|Kiyotaka]], a famous detective and [[pianist]], mysteriously disappears without a trace. Ayumu's only clue as to his brother's whereabouts is the phrase "Blade Children", the only words Ayumu could make out in Kiyotaka's final phone call. Now in his freshman year of high school, Ayumu becomes involved in solving a series of murders, crimes, and other incidents, all related to the Blade Children. Together with his school's journalist, [[Hiyono Yuizaki]], and the unwilling assistance of his sister-in-law, [[List of Spiral characters#Supporting characters|Madoka]], Ayumu tries to figure out who the Blade Children are and what are their goals.
Two years prior to the start of the series, Ayumu Narumi’s older brother, Kiyotaka, a renowned detective and pianist, vanishes without a trace. Before disappearing, Kiyotaka makes a cryptic phone call to Ayumu, leaving him with a single clue: “Blade Children.” Now a high school freshman, Ayumu becomes entangled in a series of murders and mysterious incidents, all connected to the enigmatic Blade Children. With the help of his school’s journalist, Hiyono Yuizaki, and his sister-in-law, Madoka, Ayumu works to uncover the truth behind the Blade Children and their goals.


The Blade Children are the central mystery of the series, known only as cursed children that few know about and are being pursued by so-called Hunters. They are distinguished by their cat-like eyes (though a few lack this feature) and by missing the seventh right rib bone. As Ayumu investigates them, he meets five Blade Children [[Kousuke Asazuki]], [[List of Spiral characters#The Blade Children|Rio Takeuchi]], [[Eyes Rutherford]], [[Ryoko Takamachi]], and [[List of Spiral characters#The Blade Children|Kanone Hilbert]], and is tested in various ways by them. Those who meet him eventually conclude, some more reluctantly than others, that Ayumu does have what it takes to "save" the Blade Children, as they say Kiyotaka claims.
The Blade Children are at the heart of the mystery. They are cursed individuals pursued by the Hunters, an organization that seeks to destroy them. Identified by their cat-like eyes (though some lack this trait) and the absence of their seventh right rib, the Blade Children’s origins and purpose are shrouded in secrecy. As Ayumu interacts with five key Blade Children—Kousuke Asazuki, Rio Takeuchi, Eyes Rutherford, Ryoko Takamachi, and Kanone Hilbert—he is tested repeatedly. Over time, the Blade Children come to believe that Ayumu possesses the potential to “save” them, as Kiyotaka once predicted.


The anime series, which adapts the story through the sixth volume of the manga, compares the Blade Children to [[cuckoo]] birds, having been deposited in human "nests" to be raised, and suggesting that cuckoos go violently crazy toward the end of their lives. The manga continues the story, depicting Ayumu's discoveries about the origin of the Blade Children, their relationship with Kiyotaka, and why his older brother thinks Ayumu might be their savior.
The anime adaptation follows the story up to the sixth volume of the manga, comparing the Blade Children to cuckoo birds, creatures that are left in the nests of other birds and grow increasingly dangerous with age. The manga extends the story, delving into Ayumu’s discoveries about the Blade Children’s origins, their connection to Kiyotaka, and the reasons behind Kiyotaka’s belief in Ayumu’s role as their savior.


Some thirty years ago, a man called Yaiba Mizushiro was born with one rib missing from his right ribcage. Like Kiyotaka, he excelled at everything he chose to put his mind to. When he turned twenty-three, Yaiba started his own [[secret society]], which swiftly grew powerful enough to manipulate world events. Citing boredom, Yaiba initiated the "Blade Children Project": using [[in vitro]] techniques and his [[DNA]], he created eighty children, and had a rib removed from each of them at birth as a mark of their relationship to Yaiba. These Blade Children were cursed in the same way Yaiba was: they would grow up as geniuses in their own right, but one day their blood would awaken murderously and take over their self-will, becoming [[Avatar]]s of Yaiba. Yaiba's organization split into three parties over the Blade Children Project:
Thirty years earlier, a man named Yaiba Mizushiro was born missing a rib on his right side, much like the Blade Children. A prodigy, Yaiba founded a secretive and powerful organization. Out of boredom, he launched the “Blade Children Project,” using his DNA to create 80 genetically modified children, each marked by the removal of a rib at birth. These Blade Children inherited Yaiba’s genius but were also cursed to one day lose their self-will and become murderous avatars of Yaiba’s ambition.
* The '''''Savers''''' supported Yaiba's goals and desire to create more Blade Children. With Yaiba's death, they sought to protect the fact the future had not been determined yet.
* The '''''Watchers''''' were neutral, wanting to observe the first batch of Children and gather results first.
* The '''''Hunters''''' were against Yaiba, and tried multiple times to assassinate him, but repeatedly failed. After Yaiba's death, they worked to eliminate the Blade Children because of their potentially dangerous natures.


When Yaiba was thirty-six, a Japanese man came out of nowhere and easily killed him: Kiyotaka Narumi, Yaiba's counterpart—if Yaiba had been a destroyer, Kiyotaka was a creator. Yaiba had intended to remake the world literally in his own image; with his death, the Blade Children project was halted. Kiyotaka had his hands full trying to stop the Hunters from killing the Blade Children, while trying to check the Savers at the same time.
Yaiba’s organization fractured into three factions over the Blade Children:


Just as Kiyotaka and Yaiba were linked, Ayumu eventually meets his own counterpart: [[List of Spiral characters#Supporting characters|Hizumi Mizushiro]], Yaiba's younger brother, and the one who will awaken the blood of the remaining Blade Children. <!-- note: Kiyotaka:Yaiba::Ayumu:Hizumi is not original research: the comparison is explicitly made in the text; need to find citation for where --> As Ayumu learns of this and becomes friends with Hizumi, he comes to accept that his own powers are as strong as Kiyotaka's and his role as the savior of the Blade Children, leading to a final confrontation. <!-- need a less vague description of the conclusion -->
* '''The Savers''': Supporters of Yaiba’s goals, they sought to protect the Blade Children after Yaiba’s death.
* '''The Watchers''': Neutral observers who aimed to study the Blade Children and their development.
* '''The Hunters''': Opponents of Yaiba, they sought to eliminate the Blade Children to prevent their potential danger.
 
At 36, Yaiba was killed by Kiyotaka Narumi, who became Yaiba’s counterforce. While Yaiba sought destruction, Kiyotaka worked to preserve the balance, fighting to protect the Blade Children from the Hunters and contain the ambitions of the Savers.
 
Eventually, Ayumu confronts his own counterpart, Hizumi Mizushiro, Yaiba’s younger brother and the one destined to awaken the Blade Children’s violent tendencies. Through his friendship with Hizumi and growing confidence in his own abilities, Ayumu comes to embrace his role as the Blade Children’s savior, leading to a final confrontation that determines their fate.


===''Spiral: Alive''===
===''Spiral: Alive''===
''Spiral: Alive'' is centered on a girl, Imari Sekiguchi, who falls in love with Shirou Sawamura, a boy who wants to become a detective. However, before Imari can confess to him, he unexpectedly quits school to pursue Kiyotaka Narumi. Imari learns that he also is dating Yukine Amanae, a beautiful girl at their school, and both Shirou and Imari are unaware that Yukine is actually a reluctant murderer. Meanwhile, Toru Saiki, a member of the Police Department's First Investigations Department, investigates the mysterious murders connected with Amanae and is unwilling to bring in Kiyotaka, believing that Tokyo's greatest detective is more demonic than divine. Imari, Shirou, and Saiki become involved in events that are mysteriously connected to the Blade Children. Several characters from the original series return, including Kiyotaka, Kousuke, Ryoko, Kanone, and Madoka.
''Spiral: Alive'' follows Imari Sekiguchi, a girl in love with Shirou Sawamura, an aspiring detective. Before she can confess her feelings, Shirou unexpectedly leaves school to pursue Kiyotaka Narumi. Unbeknownst to Shirou, his girlfriend, Yukine Amanae, is a reluctant murderer. As Imari and Shirou grow closer to uncovering Yukine’s secrets, they become entangled in events connected to the Blade Children.
 
Toru Saiki, a police investigator, begins probing a series of murders linked to Yukine but refuses to involve Kiyotaka, whom he views as a dangerous figure. The lives of Imari, Shirou, and Saiki intersect as they unravel mysteries surrounding the Blade Children and the shadowy factions pursuing them.
 
The series reveals that of the 80 original Blade Children, 13 have vanished from the records of the Hunters, Savers, and Watchers. These disappearances were orchestrated by a neutral party, who committed suicide after ensuring the erasure of these individuals. The only surviving record of their existence is the Mikanagi File, created by Professor Isabel Mikanagi, who masterminded their removal. After her death, the file was passed to Yukine’s parents. Following their deaths at the hands of a Hunter, Yukine became the sole bearer of the file’s secrets, stored entirely in her memory.
 
Returning characters from the original series include Kiyotaka, Kousuke, Ryoko, Kanone, and Madoka, further tying the prequel to the overarching mystery of the Blade Children.
 
== Main characters ==
 
=== '''Ayumu Narumi''' ===
:The protagonist of ''Spiral: The Bonds of Reasoning'', Ayumu is a reserved and introspective high school student with exceptional intelligence. He struggles with self-doubt, stemming from the belief that he cannot surpass his older brother, Kiyotaka, a renowned detective and pianist. Despite his insecurities, Ayumu is a skilled pianist and an excellent cook. He shares a deep bond with his sister-in-law, Madoka, and once harbored feelings for her but let them go after her marriage to Kiyotaka. Throughout the series, Ayumu is portrayed as the Blade Children’s sole hope for salvation, with Kiyotaka emphasizing that Hiyono is the most important person in Ayumu’s life.
 
=== '''Hiyono Yuizaki''' ===
:Hiyono is the cheerful and energetic school journalist who serves as Ayumu’s loyal sidekick. Her quick wit and resourcefulness often come in handy, though her confidence sometimes borders on arrogance. The polar opposite of Ayumu, Hiyono is extroverted and provides much of the series’ comic relief. She is a skilled hacker with access to an extensive network of resources and frequently uses blackmail to achieve her goals. Hiyono’s faith in Ayumu never wavers, and she shows unwavering loyalty and belief in his abilities. However, it is revealed later in the series that Hiyono is a spy planted by Kiyotaka to assist Ayumu. She has also lied about her age, being older than she initially claimed.
 
=== '''Eyes Rutherford''' ===
:Eyes is a 17-year-old world-class pianist and a member of the Blade Children. Part English, he debuted as a pianist at the age of 14 and is known for his stoic demeanor and unwavering loyalty to Kiyotaka. Eyes is deeply committed to the survival of the Blade Children, often taking on a leadership role among them. He views Ayumu as Kiyotaka’s successor and has great faith in his abilities. Eyes keeps many secrets about the Blade Children and their mysterious origins, making him a key figure in their struggle for survival.


The series reveals that of the eighty original Blade Children watched by the Hunters, Savers, and Watchers, thirteen have been completely erased from their lists of Blade Children. The one responsible for this had been a neutral party who committed suicide after accomplishing this. The only information about the thirteen missing Blade Children is contained in the Mikanagi File, named after Professor Isabel Mikanagi, who was responsible for their disappearance. With Professor Mikanagi's death, the file was entrusted to her associates, Yukine's parents. After their deaths as the result of a Hunter's actions, Yukine survived and currently holds in her memory the only record of the Mikanagi File.
=== '''Kanone Hilbert''' ===
:Kanone is a Blade Child with a dual personality, capable of being charming and kind but also manipulative and ruthless. Once close friends with Eyes Rutherford, their relationship soured over differing views on the Blade Children’s fate. Kanone believes their situation is hopeless and works with the Hunters to destroy those who give false hope. Over time, he regains his sanity and begins to believe in Ayumu’s potential to save the Blade Children. Tragically, Kanone is killed by Hizumi Mizushiro, but not before urging Ayumu to use his death as a turning point. Kanone is also a master fighter who trained many of the Blade Children in combat.


==Main characters==
=== '''Hizumi Mizushiro''' ===
{{main|List of Spiral characters{{!}}List of ''Spiral'' characters}}
:Hizumi is a manga-exclusive character and the “younger brother” of Yaiba Mizushiro. He serves as Ayumu’s counterpart, embodying traits that are opposite to Ayumu’s. Charismatic and outwardly friendly, Hizumi hides his manipulative and sinister nature beneath a cheerful facade. While he initially bonds with Ayumu, Hizumi’s true personality reveals a lonely and desperate individual consumed by despair. He becomes a formidable adversary to Ayumu, representing a significant challenge in the latter part of the series. '''Main Characters'''
; {{Nihongo|[[List of Spiral characters#Main characters|Ayumu Narumi]]|鳴海歩|Narumi Ayumu}}
 
: The protagonist of ''Spiral'', Ayumu is very intelligent, but is very introverted and has a lot of self-doubt. He fears that he cannot surpass his own perfect older brother and doubts himself to the point where he no longer believes he can do anything anymore without acting like his brother. He is a talented [[pianist]] like Kiyotaka, an excellent cook, and cares a lot for his [[sister-in-law]] Madoka. He had an affection toward Madoka, but stopped when Kiyotaka married Madoka. It also said as a fact, from Kiyotaka, that Hiyono was his most important person. Ayumu is also the supposed only hope for the Blade Children and their survival. {{Voiced by|[[Kenichi Suzumura]]|Daniel Katsük}}
=== '''Ayumu Narumi''' ===
; {{Nihongo|[[List of Spiral characters#Main characters|Hiyono Yuizaki]]|結崎ひよの|Yuizaki Hiyono}}
:The protagonist of ''Spiral: The Bonds of Reasoning'', Ayumu is a reserved and introspective high school student with exceptional intelligence. He struggles with self-doubt, stemming from the belief that he cannot surpass his older brother, Kiyotaka, a renowned detective and pianist. Despite his insecurities, Ayumu is a skilled pianist and an excellent cook. He shares a deep bond with his sister-in-law, Madoka, and once harbored feelings for her but let them go after her marriage to Kiyotaka. Throughout the series, Ayumu is portrayed as the Blade Children’s sole hope for salvation, with Kiyotaka emphasizing that Hiyono is the most important person in Ayumu’s life.
: The infamous school [[journalist]], Hiyono is the bubbly and energetic [[sidekick]] of Ayumu, always stuck to his side. Very clever and a quick-thinker, her confidence borders dangerously on overconfidence. She is extroverted and is Ayumu's polar opposite, serving as one of the series' few [[comic-relief]] characters.{{Citation needed|date=August 2008}} Her skill with computers are as amazing as her [[Hacker (computer security)|hacking]] abilities and she has access to over one hundred resources. She [[blackmail]]s Wataya often, and is very fond of Ayumu's cooking. Hiyono is also one of the few who whole-heartedly believe in Ayumu; she also has a great deal of faith, feelings, and loyalty in him that carries on for the whole series. She attends Tsukiomi High School alongside Ayumu Narumi. Later on, she is revealed to actually be a spy set out by Kiyotaka to befriend Narumi and help him out. She has also lied about her age, she is actually older than what she has said. {{Voiced by|[[Masumi Asano]]|[[Caitlin Glass]]}}
 
; {{Nihongo|[[List of Spiral characters#The Blade Children|Eyes Rutherford]]|アイズ·ラザフォード}}
=== '''Hiyono Yuizaki''' ===
: The 17-year-old world-class [[pianist]], and he is second only to Kiyotaka Narumi, Ayumu Narumi's older brother. He is one of the Blade Children, Eyes is a quarter English and debuted in the musical world at the age of 14. He cares a great deal about the [[#Blade Children|Blade Children]] and would do anything for them to survive at all costs. He is exceedingly loyal to Kiyotaka's words and seems to believe in Ayumu the most because after all, he is the clone of Kiyotaka Narumi. Eyes knows much more than the other Blade Children do, holding secrets he keeps to himself. {{Voiced by|[[Akira Ishida]]|[[John Burgmeier]]}}
:Hiyono is the cheerful and energetic school journalist who serves as Ayumu’s loyal sidekick. Her quick wit and resourcefulness often come in handy, though her confidence sometimes borders on arrogance. The polar opposite of Ayumu, Hiyono is extroverted and provides much of the series’ comic relief. She is a skilled hacker with access to an extensive network of resources and frequently uses blackmail to achieve her goals. Hiyono’s faith in Ayumu never wavers, and she shows unwavering loyalty and belief in his abilities. However, it is revealed later in the series that Hiyono is a spy planted by Kiyotaka to assist Ayumu. She has also lied about her age, being older than she initially claimed.
; {{Nihongo|[[List of Spiral characters#The Blade Children|Kanone Hilbert]]|カノン·ヒルベルト}}
 
: A [[#Blade Children|Blade Child]] with a dual personality. He could be cute and friendly or [[Psychological manipulation|manipulative]] and insane. He was very close to Eyes. He would cry for Eyes when Eyes could not when they were young, but their friendship fell apart as they grew older and developed vastly different opinions on the fate of the Blade Children. Kanone will go as far as he can to kill the people who give the Blade Children false hope, to prove to Eyes and the Blade Children they have no hope. Kanone is even willing to work with the Hunters to prove to the Blade Children that they have no hope. He does not believe that the Blade Children can be saved from their fates. Later on in the manga he regains his sanity and believes that Ayumu can save the Blade Children from a horrible fate. Just when he finally believes they can all be saved Hizumi kills him, he tells Ayumu to use his death as an opportunity. He also is an expert in fighting, he taught all the introduced Blade Children how to fight. {{Voiced by|[[Kenji Nojima]]|[[Christopher Bevins]]}}
=== '''Eyes Rutherford''' ===
; {{nihongo|[[List of Spiral characters#Supporting characters|Hizumi Mizushiro]]|ミズシロ 火澄|Mizushiro Hizumi}}
:Eyes is a 17-year-old world-class pianist and a member of the Blade Children. Part English, he debuted as a pianist at the age of 14 and is known for his stoic demeanor and unwavering loyalty to Kiyotaka. Eyes is deeply committed to the survival of the Blade Children, often taking on a leadership role among them. He views Ayumu as Kiyotaka’s successor and has great faith in his abilities. Eyes keeps many secrets about the Blade Children and their mysterious origins, making him a key figure in their struggle for survival.
: He only appears in the manga; and is the 'younger brother' of [[List of Spiral characters#Supporting characters|Yaiba Mizushiro]]. Hizumi is the complete opposite of Ayumu in many ways. He is sinister and manipulative, though he and Ayumu got along very well upon their initial meeting. Supposedly he is a very dangerous adversary for Ayumu. He has a personality similar to that of Kanone. He is energetic and has an innocent nature about him. He always smiles and is usually well liked by people unrelated to the Blade Children, but that is actually a cover-up for his true personality; he is a desperate and lonely child who knows only despair.
 
=== '''Kanone Hilbert''' ===
:Kanone is a Blade Child with a dual personality, capable of being charming and kind but also manipulative and ruthless. Once close friends with Eyes Rutherford, their relationship soured over differing views on the Blade Children’s fate. Kanone believes their situation is hopeless and works with the Hunters to destroy those who give false hope. Over time, he regains his sanity and begins to believe in Ayumu’s potential to save the Blade Children. Tragically, Kanone is killed by Hizumi Mizushiro, but not before urging Ayumu to use his death as a turning point. Kanone is also a master fighter who trained many of the Blade Children in combat.
 
=== '''Hizumi Mizushiro''' ===
:Hizumi is a manga-exclusive character and the “younger brother” of Yaiba Mizushiro. He serves as Ayumu’s counterpart, embodying traits that are opposite to Ayumu’s. Charismatic and outwardly friendly, Hizumi hides his manipulative and sinister nature beneath a cheerful facade. While he initially bonds with Ayumu, Hizumi’s true personality reveals a lonely and desperate individual consumed by despair. He becomes a formidable adversary to Ayumu, representing a significant challenge in the latter part of the series.


==Media==
==Media==
===Manga===
===Manga===
''Spiral: The Bonds of Reasoning'' was serialized by [[Enix]] in ''[[Monthly Shōnen Gangan]]'' magazine from 1999 to 2005,<ref>{{cite web|script-title=ja:「スパイラル ～推理の絆～」生誕20周年記念カフェ、東京・大阪・名古屋で開催決定|url=https://natalie.mu/comic/news/366261|website=[[Natalie (website)|Natalie]]|publisher=Natasha, Inc.|access-date=April 11, 2021|language=ja|date=February 10, 2020}}</ref> and collected in 15 {{transl|ja|[[tankōbon]]}}.<ref name="ja-release"/> The manga was licensed in North America in 2005 by [[Tokyopop]],<ref name="tokyopop-licensed">{{cite web|url=http://www.animenewsnetwork.com/news/2005-04-28/new-tokyopop-manga|title=New Tokyopop Manga|publisher=[[Anime News Network]]|date=April 28, 2005|access-date=August 13, 2008}}</ref> with the first volume initially scheduled for release October 2005.<ref name="tokyopop-scheduled">{{cite web|url=http://www.animenewsnetwork.com/news/2005-06-08/tokyopop-still-has-spiral|title=Tokyopop Still Has Spiral|publisher=[[Anime News Network]]|date=June 8, 2005|access-date=August 13, 2008}}</ref> The series was never published and Tokyopop dropped the license. The license was later acquired by [[Yen Press]] in 2007. Yen Press released the first volume in October 2007, releasing the remaining volumes quarterly, with the final volume in April 2011.<ref name="yenpress">{{cite web|url=http://yenpress.us/?page_id=134|title=Spiral: The Bonds of Reasoning|publisher=[[Yen Press]]|access-date=February 26, 2008 }}</ref>
''Spiral: The Bonds of Reasoning'' was serialized by Enix in ''Monthly Shōnen Gangan'' from 1999 to 2005 and was collected into 15 tankōbon volumes. Initially licensed in North America by Tokyopop in 2005, the release was canceled before publication. Yen Press later acquired the license in 2007, releasing all volumes from October 2007 to April 2011.
 
The prequel and spin-off series, ''Spiral: Alive'', written by Kyo Shirodaira and illustrated by Eita Mizuno, was serialized in ''Gangan Wing'' starting May 2001. In 2006, it moved to ''Monthly Shōnen Gangan'' and concluded in June 2008. The series was collected into five tankōbon volumes.


''Spiral: Alive'', a prequel and [[Spin-off (media)|spin off]] of the original series, also written by Shirodaira and illustrated by Mizuno, began publishing in the May 2001 issue of ''[[Gangan Wing]]''.<ref>{{cite web|script-title=ja:ガンガンＷＩＮＧ５月号 ＣＯＮＴＥＮＴＳ|url=http://www.enix.co.jp/magazine/wing/new/new.html|website=Wing Online|publisher=[[Enix]]|access-date=April 11, 2021|archive-url=https://web.archive.org/web/20010428074111fw_/http://www.enix.co.jp/magazine/wing/new/new.html|archive-date=April 28, 2001|language=ja}}</ref> In 2006, the series moved to ''Monthly Shōnen Gangan'', where it ended in June 2008.<ref name="spiralalive-ending">{{cite web|url=http://www.animenewsnetwork.com/news/2008-04-17/shirodaira-mizuno-spiral-alive-mystery-manga-to-end|title=Shirodaira, Mizuno's Spiral Alive Mystery Manga to End (Updated)|publisher=[[Anime News Network]]|date=April 17, 2008|access-date=August 14, 2008}}</ref> It has been collected in five bound volumes.
=== '''Anime''' ===
''Spiral: The Bonds of Reasoning'' was adapted into a 25-episode anime series by J.C.Staff, directed by Shingo Kaneko. It aired on TV Tokyo from October 1, 2002, to March 25, 2003, and covers the first six volumes of the manga, featuring an anime-original ending.


====Volume list====
Key details about the anime include:
=====''Spiral: The Bonds of Reasoning''=====
{{Graphic novel list/header
|Language = Japanese
|SecondLanguage = North American<ref name="yenpress"/>
|Width =
}}
{{Graphic novel list
|VolumeNumber = 1
|OriginalRelDate = February 22, 2000<ref name="ja-release">{{cite web|url=http://www.square-enix.co.jp/magazine/lineup-book/sakkabetu/ma.html|script-title=ja:作家名別出版物一覧「ま」|publisher=[[Square Enix]]|language=ja|access-date=April 11, 2010|url-status=dead|archive-url=https://web.archive.org/web/20121010212637/http://www.square-enix.co.jp/magazine/lineup-book/sakkabetu/ma.html|archive-date=October 10, 2012}}</ref>
|OriginalISBN = 978-4-7575-0175-1
|LicensedRelDate = October 17, 2007
|LicensedISBN = 978-0-7595-2341-8
|ChapterList =
* 1. {{nihongo|"The Invisible Hand on the Landing (Part I)"|踊り場の見えざる手（前編）|Odoriba no Miezarute (Zenpen)}}
* 2. {{nihongo|"The Invisible Hand on the Landing (Part II)"|踊り場の見えざる手（後編）|Odoriba no Miezarute (Kōhen)}}
* 3. {{nihongo|"Apollo's Arrow"|アポロンの矢|Aporon no Ya}}
* 4. {{nihongo|"Room Behind the Ward Lock (Part I)"|ウォード錠の密室（前編）|Wōdo Shō no Misshitsu (Zenpen)}}
* 5. {{nihongo|"Room Behind the Ward Lock (Part II)"|ウォード錠の密室（中編）|Wōdo Shō no Misshitsu (Chūhen)}}
|Summary =
}}
{{Graphic novel list
|VolumeNumber = 2
|OriginalRelDate = July 22, 2000<ref name="ja-release"/>
|OriginalISBN = 978-4-7575-0271-0
|LicensedRelDate = January 9, 2008
|LicensedISBN = 978-0-7595-2407-1
|ChapterList =
* 6. {{nihongo|"Room Behind the Ward Lock (Part III)"|ウォード錠の密室（後編）|Wōdo Shō no Misshitsu (Kōhen)}}
* 7. {{nihongo|"Explosion Adventure"|爆弾太平記|Bakudan Taiheiki}}
* 8. {{nihongo|"The Painful Rib"|痛む肋骨|Itamu Abarabone}}
* 9. {{nihongo|"The Joy of a Believer (Part I)"|信じる者の幸福（前編）|Shinjiru Mono no Kōfuku (Zenpen)}}
* 10. {{nihongo|"The Joy of a Believer (Part II)"|信じる者の幸福（後編）|Shinjiru Mono no Kōfuku (Kōhen)}}
|Summary =
}}
{{Graphic novel list
|VolumeNumber = 3
|OriginalRelDate = December 20, 2000<ref name="ja-release"/>
|OriginalISBN = 978-4-7575-0370-0
|LicensedRelDate = April 22, 2008
|LicensedISBN = 978-0-7595-2637-2
|ChapterList =
* 11. {{nihongo|"A Boy's Strength"|少年の力|Shōnen no Chikara}}
* 12. {{nihongo|"Versus Rio"|VS理緒|Vāsesu Rio}}
* 13. {{nihongo|"Throw Off the Encompassing Net"|包囲網を抜けよ|Hōimō o Nukeyo}}
* 14. {{nihongo|"The Choice of the Non-Believer"|信じぬ者の選択|Shinjinu Mono no Sentaku}}
|Summary =
}}
{{Graphic novel list
|VolumeNumber = 4
|OriginalRelDate = June 22, 2001<ref name="ja-release"/>
|OriginalISBN = 978-4-7575-0468-4
|LicensedRelDate = July 15, 2008
|LicensedISBN = 978-0-7595-2834-5
|ChapterList =
* 15. {{nihongo|"The Choice of the Believer"|信じる者の選択|Shinjiru Mono no Sentaku}}
* 16. {{nihongo|"A Day Full of Losers"|敗者ばかりの日|Haisha bakari no Hi}}
* 17. {{nihongo|"Flash of Lightning at Five o'Clock"|五時の稲妻|Go-ji no Inazuma}}
* 18. {{nihongo|"Cold Equation"|冷たい方程式|Tsumetai Hōteishiki}}
* 19. {{nihongo|"All That You Can Do"|きみにできるあらゆること|Kimi ni Dekiru Arayuru Koto}}
|Summary =
}}
{{Graphic novel list
|VolumeNumber = 5
|OriginalRelDate = October 22, 2001<ref name="ja-release"/>
|OriginalISBN = 978-4-7575-0557-5
|LicensedRelDate = October 28, 2008
|LicensedISBN = 978-0-7595-2835-2
|ChapterList =
* 20. {{nihongo|"The Only Clear Way to Do It"|たったひとつの冴えたやり方|Tattahitotsu no Saeta Yarikata}}
* 21. {{nihongo|"Goodnight, Sweetheart"|グッドナイト スイートハーツ|Guddonaito Suītohātsu}}
* 22. {{nihongo|"Dry Eyes"|乾いた瞳|Kawaita Hitomi}}
* 23. {{nihongo|"Night Falls Again"|夜がまた来る|Yoru ga Mata Kuru}}
* 24. {{nihongo|"Moving Target"|動く標的|Ugoku Hyōteki}}
* 25. {{nihongo|"Like a Swan"|ライク・ア・スワン|Raiku A Suwan}}
|Summary =
}}
{{Graphic novel list
|VolumeNumber = 6
|OriginalRelDate = April 22, 2002<ref name="ja-release"/>
|OriginalISBN = 978-4-7575-0678-7
|LicensedRelDate = January 6, 2009
|LicensedISBN = 978-0-7595-2913-7
|ChapterList =
* 26. {{nihongo|"Distant Dawn"|遠い夜明け|Tōi Yoake}}
* 27. {{nihongo|"Waltz Into Darkness"|暗闇へのワルツ|Kurayami e no Warutsu}}
* 28. {{nihongo|"Death Is My Dance Partner"|死はわが踊り手|Shi wa Waga Odorite}}
* 29. {{nihongo|"Black Angel"|黒い天使|Kuroi Tenshi}}
* 30. {{nihongo|"Black Path of Fear"|恐怖の冥路|Kyōfu no Meiro}}
* 31. {{nihongo|"The Seat of He Who Scoffs"|あざける者の座|Azakeru Mono no Za}}
|Summary =
}}
{{Graphic novel list
|VolumeNumber = 7
|OriginalRelDate = September 21, 2002<ref name="ja-release"/>
|OriginalISBN = 978-4-7575-0790-6
|LicensedRelDate = April 30, 2009
|LicensedISBN = 978-0-7595-2914-4
|ChapterList =
* 32. {{nihongo|"The Sound of the Cookie Crumbling"|クッキーの崩れる音|Kūkī no Kuzereru Oto}}
* 33. {{nihongo|"Ant in a Glass Box"|ガラス箱のアリ|Garasu Hako no Ari}}
* 34. {{nihongo|"Who Knows What the Heavens Will Bring?"|天のさだめを誰が知る|Ten no Sadame o Dare ga Shiru}}
* 35. {{nihongo|"La Campanella"|ラ・カンパネラ|Ra Kanpanera}}
* 36. {{nihongo|"Lest Darkness Fall"|闇よ落ちるなかれ|Yami yo Ochirunakare}}
|Summary =
}}
{{Graphic novel list
|VolumeNumber = 8
|OriginalRelDate = January 22, 2003<ref name="ja-release"/>
|OriginalISBN = 978-4-7575-0854-5
|LicensedRelDate = July 14, 2009
|LicensedISBN = 978-0-7595-2915-1
|ChapterList =
* 37. {{nihongo|"The Game of Rat and Dragon"|鼠と竜のゲーム|Nezumi to Ryū no Gēmu}}
* 38. {{nihongo|"A Scanner Darkly"|暗闇のスキャナー|Kurayami no Sukyanā}}
* 39. {{nihongo|"Fratres (Brothers)"|フラトレス（兄弟）|Furatoresu (Kyōdai)}}
* 40. {{nihongo|"The Choice of Life"|命の選択を|Inochi no Sentaku o}}
|Summary =
}}
{{Graphic novel list
|VolumeNumber = 9
|OriginalRelDate = July 22, 2003<ref name="ja-release"/>
|OriginalISBN = 978-4-7575-0982-5
|LicensedRelDate = October 27, 2009
|LicensedISBN = 978-0-7595-2916-8
|ChapterList =
* 41. {{nihongo|"Footfall"|降伏の儀式|Dōbuku no Gishiki}}
* 42. {{nihongo|"The Mote in God's Eye"|神の目の小さな塵|Kami no Me no Chiisana Chiri}}
* 43. {{nihongo|"Time Enough For Love"|愛に時間を|Ai ni Jikan o}}
* 44. {{nihongo|"How's Shrödinger's Cat?"|シュレディンガーの猫は元気か|Shuredingā no Neko wa Genki ka}}
* 45. {{nihongo|"The Eagle Has Landed"|鷲は舞い降りた|Washi wa Maiorita}}
* Bonus Story. {{nihongo|"Great Detective Kiyokata Narumi: Kurumi Kohinata's Challenge"|名探偵鳴海清隆・小日向くるみの挑戦|Meitantei Narumi Kiyotaka – Kohinata Kurumi no Chōsen}}
|Summary =
}}
{{Graphic novel list
|VolumeNumber = 10
|OriginalRelDate = December 22, 2003<ref name="ja-release"/>
|OriginalISBN = 978-4-7575-1099-9
|LicensedRelDate = January 26, 2010
|LicensedISBN = 978-0-7595-2917-5
|ChapterList =
* 46. {{nihongo|"Childhood's End"|幼年期の終わり|Yōnenki no Owari}}
* 47. {{nihongo|"Your Battle Song"|きみのたたかいのうた|Kimi no Tatakai no Uta}}
* 48. {{nihongo|"To Live Again"|いまひとたびの生を|Ima Hitotabi no Sei o}}
* 49. {{nihongo|"Curtain Fall"|カーテン・フォール|Kāten Fōru}}
* 50. {{nihongo|"Confessions of a Crap Artist"|戦争が終わり、世界の終わりがはじまった|Sensō ga Owari, Sekai no Owari ga Hajimatta}}
|Summary =
}}
{{Graphic novel list
|VolumeNumber = 11
|OriginalRelDate = April 22, 2004<ref name="ja-release"/>
|OriginalISBN = 978-4-7575-1186-6
|LicensedRelDate = April 20, 2010
|LicensedISBN = 978-0-7595-2918-2
|ChapterList =
* 51. {{nihongo|"Reach For Tomorrow"|明日にとどく|Ashita ni Todoku}}
* 52. {{nihongo|"The Immortality Option"|造物主の選択|Zōbutsushu no Sentaku}}
* 53. {{nihongo|"Blood Music"|ブラッド・ミュージック|Buraddo Myūjikku}}
* 54. {{nihongo|"Untouched by Human Hands"|人間の手がまだ触れない|Ningen no Te ga Mada Furenai}}
* 55. {{nihongo|"The Player on the Other Side"|盤面の敵|Banmen no Teki}}
* 56. {{nihongo|"As a Non-Believer Despite It All"|されど信じぬ者として|Saredo Shinjinu Mono toshite}}
|Summary =
}}
{{Graphic novel list
|VolumeNumber = 12
|OriginalRelDate = August 21, 2004<ref name="ja-release"/>
|OriginalISBN = 978-4-7575-1252-8
|LicensedRelDate = July 13, 2010
|LicensedISBN = 978-0-7595-2919-9
|ChapterList =
* 57. {{nihongo|"The Two Faces of Tomorrow"|未来の二つの顔|Mirai no Futatsu no Kao}}
* 58. {{nihongo|"The Doors of His Face, the Lamps of His Mouth"|その顔はあまたの扉、その口はあまたの灯|Sono Kao wa Amata no Tobira, Sono Kuchi wa Amata no Tomoshi}}
* 59. {{nihongo|"The Toynbee Convector"|二人がここにいる不思議|Futari ga Koko ni Iru Fushigi}}
* 60. {{nihongo|"And My Fear is Great"|そして私のおそれはつのる|Soshite Watashi no Osore wa Tsunoru}}
* 61. {{nihongo|"A Walk in the Sun"|日の下を歩いて』|Hi no Shite o Aruite}}
|Summary =
}}
{{Graphic novel list
|VolumeNumber = 13
|OriginalRelDate = April 22, 2005<ref name="ja-release"/>
|OriginalISBN = 978-4-7575-1366-2
|LicensedRelDate = October 26, 2010
|LicensedISBN = 978-0-7595-2920-5
|ChapterList =
* 62. {{nihongo|"The Divine Invasion"|聖なる侵入|Seinaru Shinyū}}
* 63. {{nihongo|"Rustle of Wings"|翼のざわめき|Tsubasa no Zawameki}}
* 64. {{nihongo|"With Delicate Mad Hands"|たおやかな狂える手に|Taoyakana Kurueru Te ni}}
* 65. {{nihongo|"Towards Zero"|ゼロ時間へ|Zero Jikan e}}
* 66. {{nihongo|"The Lost World"|失われた世界|Ushinawareta Sekai}}
|Summary =
}}
{{Graphic novel list
|VolumeNumber = 14
|OriginalRelDate = September 22, 2005<ref name="ja-release"/>
|OriginalISBN = 978-4-7575-1521-5
|LicensedRelDate = January 25, 2011
|LicensedISBN = 978-0-7595-2921-2
|ChapterList =
* 67. {{nihongo|"Twin Paradox"|双子のパラドックス|Futago no Paradokkusu}}
* 68. {{nihongo|"Reasons to be Cheerful"|しあわせの理由|Shiawase no Riyū}}
* 69. {{nihongo|"Two Skies"|ふたりのそら|Futari no Sora}}
* 70. {{nihongo|"The Darkness That Envelops You"|あなた達のくらやみで|Anata-tachi no Kurayami de}}
* 71. {{nihongo|"Good-Bye Song (Part I)"|お別れの日にうたう歌（前編）|Owakare no ni Utau Uta (Zenpen)}}
|Summary =
}}
{{Graphic novel list
|VolumeNumber = 15
|OriginalRelDate = January 21, 2006<ref name="ja-release"/>
|OriginalISBN = 978-4-7575-1605-2
|LicensedRelDate = April 26, 2011
|LicensedISBN = 978-0-7595-2922-9
|ChapterList =
* 72. {{nihongo|"Good-Bye Song(Part II)"|お別れの日にうたう歌（後編）|Owakare no ni Utau Uta (Kōhen)}}
* 73. {{nihongo|"Beyond Babel"|バベルの向こう|Baberu no Mukō}}
* 74. {{nihongo|"The Only Sure Thing"|ただひとつ確かなもの|Tada Hitotsu Tashikana Mono}}
* 75. {{nihongo|"God's Beautiful World"|神の美しき世界|Kami no Utsukushiki Sekai}}
* 76. {{nihongo|"Gently Stick a Feather in Your Cap"|優しく、羽飾りを|Yasashiku, Hane-kazari o}}
* Final Chapter. {{nihongo|"Spiral: May You Have As Many Wonderful Days as Possible"|Spiral ～なるべくなら良き日々が多くありますよう～|Supairaru: Narubeku Nara Yoki Hibi Ōku Arimasuyō}}
|Summary =
}}
{{Graphic novel list/footer}}


=====''Spiral: Alive''=====
* '''Opening Theme''': “Kibouhou” (“Cape of Hope”) by Strawberry Jam
{{Graphic novel list/header
* '''Ending Theme''': “Kakuteru” (“Cocktail”) by Hysteric Blue
|OneLanguage = yes
* '''Insert Song''': “Twinkle My Heart” by Mitake Akira (performed by Hiyono Yuizaki)
|Width=98%
}}
{{Graphic novel list
|VolumeNumber    = 1
|RelDate        = April 22, 2004<ref name="ja-release"/>
|ISBN            = 978-4-7575-0674-9
}}
{{Graphic novel list
|VolumeNumber    = 2
|RelDate        = February 22, 2007<ref name="ja-release"/>
|ISBN            = 978-4-7575-1948-0
}}
{{Graphic novel list
|VolumeNumber    = 3
|RelDate        = September 22, 2007<ref name="ja-release"/>
|ISBN            = 978-4-7575-2114-8
}}
{{Graphic novel list
|VolumeNumber    = 4
|RelDate        = February 22, 2008<ref name="ja-release"/>
|ISBN            = 978-4-7575-2221-3
}}
{{Graphic novel list
|VolumeNumber    = 5
|RelDate        = August 22, 2008<ref name="ja-release"/>
|ISBN            = 978-4-7575-2355-5
}}
{{Graphic novel list/footer}}


===Anime===
The anime incorporates classical piano music, such as:
''Spiral: The Bonds of Reasoning'' was adapted as a 25-episode anime television series by [[TV Tokyo]] with production by [[J.C.Staff]]. It adapts the first six volumes of the manga, with a different ending. It was directed by [[Shingo Kaneko]] with music by [[Akira Mitake]] and character designs by Yumi Nakayama. The series was broadcast from October 1, 2002, to March 25, 2003, and released on nine DVDs between December 18, 2002, and August 27, 2003.<ref name="sony-releases">{{cite web|url=http://www.sonymusic.co.jp/Animation/spiral/dvdcd/index.html|title=スパイラル 〜推理の絆〜 /SPIRAL-net/|publisher=Sony Entertainment|language=ja|access-date=August 13, 2008}}</ref>


The opening theme was "Kibouhou" ("Cape of Hope") by [[Spiral:Strawberry Jam|Strawberry Jam]], and the ending theme was "Kakuteru" ("Cocktail") by [[Hysteric Blue]]. There was also an insert song, "Twinkle My Heart" by [[Mitake Akira]], which is sung by the character Hiyono Yuizaki. Piano music used during the series includes ''[[Jeux d'eau (music)|Jeux d’eau]]'' by [[Maurice Ravel]] (episode 3), [[Liebesträume|''Liebestraume'' No. 3]] by [[Franz Liszt]] (played in concert by Eyes Rutherford in episode 13), [[Harmonies Poétiques et Religieuses|''Benediction de Dieu dans la solitude'']] by Liszt (episode 21; in the manga, this is a significant piece of music for Eyes and Kanone Hilbert), and ''Arabesque'' No. 1 by [[Claude Debussy]] (episode 25). A soundtrack album was released March 19, 2003.<ref name="sony-releases"/>
* “Jeux d’eau” by Maurice Ravel (Episode 3)
* “Liebestraume No. 3” by Franz Liszt (Episode 13)
* “Benediction de Dieu dans la solitude” by Franz Liszt (Episode 21)
* “Arabesque No. 1” by Claude Debussy (Episode 25)


The series is licensed in [[DVD region code#1|Region 1]] by [[Funimation]], which has released it on six [[DVD]]s and as a box set.<ref name="funimation"/> Funimation also aired the series, in dubbed format, in the [[Funimation Channel]] programming block on [[Colours TV]] from June 19, 2006, until August 22, 2006.
The soundtrack, composed by Akira Mitake, was released on March 19, 2003.


{|class="wikitable" width="98%" style="background:#fff;"
The anime was licensed for North America by Funimation and released on six DVDs and as a complete box set. It was also broadcast in English on the Funimation Channel and Colours TV in 2006.
|- style="border-bottom:3px solid #CCF"
! # !! Title<ref name="funimation">{{cite web|url=http://funimation.com/spiral/|title=The Official Spiral Anime Website from Funimation|publisher=[[Funimation]]|access-date=August 13, 2008|url-status=dead|archive-url=https://web.archive.org/web/20080817051903/http://funimation.com/spiral/|archive-date=August 17, 2008 }}</ref><ref name="sony-eps">{{cite web|url=http://www.sonymusic.co.jp/Animation/spiral/story/index.html|title=スパイラル 〜推理の絆〜 /SPIRAL-net/|publisher=Sony Entertainment|language=ja|access-date=August 13, 2008}}</ref> !! width="15%"|Original airdate<ref>{{cite web|url=http://www.tv-tokyo.co.jp/anime/spiral/story.html|script-title=ja:スパイラル ～推理の絆～|publisher=[[TV Tokyo]]|language=ja|access-date=April 11, 2010|archive-url=https://web.archive.org/web/20040608041936/http://www.tv-tokyo.co.jp/anime/spiral/story.html|archive-date=June 8, 2004|url-status=dead}}</ref> !! width="15%"|U.S. airdate
{{Episode list
|EpisodeNumber  = 1
|Title          = Spiral of Destiny
|AltTitle        = Unmei no Rasen
|RAltTitle      = &nbsp;({{Nihongo2|運命の螺旋}})
|OriginalAirDate = {{Start date|2002|10|1}}
|AltDate        = June 19, 2006
|ShortSummary    = The story begins with Ayumu Narumi getting blamed for pushing Sayoko Shiranagatani off the fifth floor. The crime inspector (his sister-in-law) Madoka and everyone else find him to be the only possible suspect, but he seems unconcerned. Enter, Hiyono Yuizaki, who offers to help him prove his innocence while referring to him as "Mr. Criminal". But at the same time Ayumu is slowly piecing the crime together. He confronts Sonobe, a new teacher at school, and tells him he will unveil his secret. Madoka, Ayumu, Hiyono, and Madoka's assistant find him on the roof and reveal him to be the culprit because he switched the girl's glasses, causing her to fall. But suddenly Sonobe congratulates him ny saying that he wouldn't expect less from [[List of Spiral characters#Main characters|Kiyotaka Narumi]]'s brother and runs away after mentioning Blade Children. After giving a small chase the gang finds Sonobe unconscious.
}}
{{Episode list
|EpisodeNumber  = 2
|Title          = Manor of Death
|AltTitle        = Shi no Seijukan
|RAltTitle      = &nbsp;({{Nihongo2|死の聖樹館}})
|OriginalAirDate = {{Start date|2002|10|8}}
|AltDate        = June 20, 2006
|ShortSummary    = A middle-aged woman named Takako Adachi is found dead in Sayoko's house who is later found by her cousin Kei. Ayumu along with Hiyono decide to the house to investigate; they soon find out that the reason Takako was murdered was because she was an agent working undercover for the ''Hunters''. Later on, the true culprit is revealed to be the [[Housekeeper (domestic worker)|housekeeper]] Reiko Hatsuyama, who had killed Takako to protect Sayoko because she's one of the Blade Children and is also the one responsible for attacking Sonobe in the first episode.
}}
{{Episode list
|EpisodeNumber  = 3
|Title          = Cursed Children
|AltTitle        = Norowareta Kodomotachi
|RAltTitle      = &nbsp;({{Nihongo2|呪われた子供たち}})
|OriginalAirDate = {{Start date|2002|10|15}}
|AltDate        = June 21, 2006
|ShortSummary    = A famous pianist named Eyes Rutherford gets Ayumu's attention during an interview on television. Once Ayumu arrived, Rutherford wanted him to play the piano, however Ayumu refused claiming that he lost interest in playing after Kiotaka went missing. Afterwards, Hiyono and Ayumu have to stop a bomb made by Rutherford before explodes. Along with Hiyono's help, Ayumu finally stopped the bomb. The episode ends with Hiyono and Ayumu sitting in the crowd, at Ruthford's concert.
}}
{{Episode list
|EpisodeNumber  = 4
|Title          = The Happiness of Those Who Believe
|AltTitle        = Shinjirumono no Kōfuku
|RAltTitle      = &nbsp;({{Nihongo2|信じる者の幸福}})
|OriginalAirDate = {{Start date|2002|10|22}}
|AltDate        = June 22, 2006
|ShortSummary    = The episode begins as Takashi Sonobe is suddenly killed by Kousuke Asazuki, another Blade Child. Ayumu and Hiyono discover the person who killed Sonobe once they confront him; Ayumu is then forced to play a game with him to guess his card, he guesses right by a trick he used with Kousuke's knife.
}}
{{Episode list
|EpisodeNumber  = 5
|Title          = Misty Gallows
|AltTitle        = Kiri no Shikei dai
|RAltTitle      = &nbsp;({{Nihongo2|霧の死刑台}})
|OriginalAirDate = {{Start date|2002|10|29}}
|AltDate        = June 23, 2006
}}
{{Episode list
|EpisodeNumber  = 6
|Title          = Blind Spot in the Web
|AltTitle        = Houi Ami no Hokaku
|RAltTitle      = &nbsp;({{Nihongo2|包囲網の死角}})
|OriginalAirDate = {{Start date|2002|11|5}}
|AltDate        = June 26, 2006
}}
{{Episode list
|EpisodeNumber  = 7
|Title          = The Choice of the Nonbeliever
|AltTitle        = Shinjinumono no Sentaku
|RAltTitle      = &nbsp;({{Nihongo2|信じぬ者の選択}})
|OriginalAirDate = {{Start date|2002|11|12}}
|AltDate        = June 27, 2006
}}
{{Episode list
|EpisodeNumber  = 8
|Title          = Day of the Defeated
|AltTitle        = Haisho Bakari no hi
|RAltTitle      = &nbsp;({{Nihongo2|敗者ばかりの日}})
|OriginalAirDate = {{Start date|2002|11|19}}
|AltDate        = June 28, 2006
}}
{{Episode list
|EpisodeNumber  = 9
|Title          = All Things That Are Possible to You
|AltTitle        = Kimi ni Dekiru Arayurukoto
|RAltTitle      = &nbsp;({{Nihongo2|きみにできるあらゆること}})
|OriginalAirDate = {{Start date|2002|11|26}}
|AltDate        = June 29, 2006
}}
{{Episode list
|EpisodeNumber  = 10
|Title          = Only One Wise Action
|AltTitle        = Tatta Hitotsu no Saeta Yari Kata
|RAltTitle      = &nbsp;({{Nihongo2|たった一つの冴えたやり方}})
|OriginalAirDate = {{Start date|2002|12|3}}
|AltDate        = June 30, 2006
}}
{{Episode list
|EpisodeNumber  = 11
|Title          = Goodnight Sweetheart
|AltTitle        = Guddonaito Suītohātsu
|RAltTitle      = &nbsp;({{Nihongo2|グッドナイトスイートハーツ}})
|OriginalAirDate = {{Start date|2002|12|10}}
|AltDate        = July 3, 2006
}}
{{Episode list
|EpisodeNumber  = 12
|Title          = Dry Eyes
|AltTitle        = Kawaita Hitomi
|RAltTitle      = &nbsp;({{Nihongo2|乾いた瞳}})
|OriginalAirDate = {{Start date|2002|12|17}}
|AltDate        = July 4, 2006
}}
{{Episode list
|EpisodeNumber  = 13
|Title          = Overture
|AltTitle        = Overture -Jokyoku-
|RAltTitle      = &nbsp;({{Nihongo2|Overture 〜序曲〜}})
|OriginalAirDate = {{Start date|2002|12|24}}
|AltDate        = July 5, 2006
}}
{{Episode list
|EpisodeNumber  = 14
|Title          = Shimmering Fragrance
|AltTitle        = Amaki Kaori Kagerou ni Nite
|RAltTitle      = &nbsp;({{Nihongo2|甘き香り陽炎に似て !}})
|OriginalAirDate = {{Start date|2003|1|7}}
|AltDate        = July 25, 2006
}}
{{Episode list
|EpisodeNumber  = 15
|Title          = Like a Swan
|AltTitle        = Raiku a Suwan
|RAltTitle      = &nbsp;({{Nihongo2|ライク·ア·スワン}})
|OriginalAirDate = {{Start date|2003|1|14}}
|AltDate        = July 26, 2006
}}
{{Episode list
|EpisodeNumber  = 16
|Title          = Moving Targets
|AltTitle        = Marekanezaru Hōmonsho
|RAltTitle      = &nbsp;({{Nihongo2|まねかれざる訪問者}})
|OriginalAirDate = {{Start date|2003|1|21}}
|AltDate        = July 27, 2006
}}
{{Episode list
|EpisodeNumber  = 17
|Title          = The Watcher in the Darkness
|AltTitle        = Kurayami no Sukyanaa
|RAltTitle      = &nbsp;({{Nihongo2|暗闇のスキャナー}})
|OriginalAirDate = {{Start date|2003|1|28}}
|AltDate        = July 28, 2006
}}
{{Episode list
|EpisodeNumber  = 18
|Title          = The Lamenting Angel
|AltTitle        = Nageki no Tenshi
|RAltTitle      = &nbsp;({{Nihongo2|嘆きの天使}})
|OriginalAirDate = {{Start date|2003|2|4}}
|AltDate        = July 31, 2006
}}
{{Episode list
|EpisodeNumber  = 19
|Title          = Mirror of the Heart
|AltTitle        = Kokoro no Kagami
|RAltTitle      = &nbsp;({{Nihongo2|心の鏡}})
|OriginalAirDate = {{Start date|2003|2|11}}
|AltDate        = August 1, 2006
}}
{{Episode list
|EpisodeNumber  = 20
|Title          = Whispering Shadows
|AltTitle        = Sasayaku Kage
|RAltTitle      = &nbsp;({{Nihongo2|ささやく影}})
|OriginalAirDate = {{Start date|2003|2|18}}
|AltDate        = August 2, 2006
}}
{{Episode list
|EpisodeNumber  = 21
|Title          = The Sound of a Breaking Heart
|AltTitle        = Kokoro no Kudakeru Oto
|RAltTitle      = &nbsp;({{Nihongo2|心の砕ける音}})
|OriginalAirDate = {{Start date|2003|2|25}}
|AltDate        = August 3, 2006
}}
{{Episode list
|EpisodeNumber  = 22
|Title          = The Confession
|AltTitle        = Kamen no Kokuhaku
|RAltTitle      = &nbsp;({{Nihongo2|仮面の告白}})
|OriginalAirDate = {{Start date|2003|3|4}}
|AltDate        = August 4, 2006
}}
{{Episode list
|EpisodeNumber  = 23
|Title          = Relentless Rain
|AltTitle        = Yamanai Ame
|RAltTitle      = &nbsp;({{Nihongo2|止まない雨}})
|OriginalAirDate = {{Start date|2003|3|11}}
|AltDate        = August 18, 2006
}}
{{Episode list
|EpisodeNumber  = 24
|Title          = The Man in the High Castle
|AltTitle        = Takai Shiru no Otoko
|RAltTitle      = &nbsp;({{Nihongo2|高い城の男}})
|OriginalAirDate = {{Start date|2003|3|18}}
|AltDate        = August 21, 2006
}}
{{Episode list
|EpisodeNumber  = 25
|Title          = The Sound of an Iris Freezing and Melting
|AltTitle        = Ayame no Ite Toku Oto
|RAltTitle      = &nbsp;({{Nihongo2|アヤメの凍て解く音}})
|OriginalAirDate = {{Start date|2003|3|25}}
|AltDate        = August 22, 2006
}}
|}


==Reception==
== '''Reception''' ==
<!-- reviews of manga and anime get summarized here -->
Both the manga and anime adaptations have been praised for their suspenseful storytelling and intricate mystery elements. However, the manga has received minor criticism for overt sexual content.
{{Expand section|date=September 2008}}
The manga and anime adaptation have been praised for their creation of [[suspense]] and good mystery stories.<ref name="ann-dvd1">{{cite web | url=http://www.animenewsnetwork.com/review/spiral/dvd-1 | title=Review: Spiral: DVD 1: The Melody of Logic | publisher=[[Anime News Network]] | author=Broestl, Sean | date=June 3, 2005 | access-date=August 15, 2008}}</ref> Although the manga has received slight criticism for its blatant display of sexual content.


==See also==
==See also==
*''[[In/Spectre]]'', another manga series written by Kyo Shirodaira
*''[[In/Spectre]]'', another manga series written by Kyo Shirodaira.
 
==References==
{{reflist}}


==External links==
==External links==
* {{ann|manga|4124}}
* [http://yenpress.us/?page_id=134 ''Spiral''] at [[Yen Press]]
* [http://yenpress.us/?page_id=134 ''Spiral''] at [[Yen Press]]
* [https://web.archive.org/web/20080817051903/http://funimation.com/spiral/ ''Spiral''] at [[Funimation]]
* [https://web.archive.org/web/20080817051903/http://funimation.com/spiral/ ''Spiral''] at [[Funimation]]
* [http://www.sonymusic.co.jp/Animation/spiral/ ''Spiral''] at [[Aniplex]] {{in lang|ja}}
* [http://www.sonymusic.co.jp/Animation/spiral/ ''Spiral''] at [[Aniplex]]  
 
{{Monthly Shōnen Gangan}}
{{Monthly Gangan Wing}}
{{J.C.Staff}}


[[Category:1999 manga]]
[[Category:1999 manga]]

Latest revision as of 21:45, 11 December 2024

Spiral: The Bonds of Reasoning (Japanese: テンプレート:日本語, Spiral: Suiri no Kizuna) is a Japanese manga series written by Kyo Shirodaira and illustrated by Eita Mizuno. Initially serialized by Enix and later by Square Enix, the series ran in Monthly Shōnen Gangan from 1999 to 2005, spanning 15 tankōbon volumes. The story centers on Ayumu Narumi, a high school student, as he investigates the enigmatic Blade Children—gifted individuals with cat-like eyes and the absence of a seventh rib bone, who are said to be cursed.

A prequel, Spiral: Alive, also created by Shirodaira and Mizuno, was serialized in Gangan Wing and later Monthly Shōnen Gangan from April 2004 to June 2008, culminating in five collected volumes.

In North America, Spiral: The Bonds of Reasoning was initially licensed for English publication by Tokyopop, but the company discontinued the series. Yen Press subsequently acquired the rights and released the first volume in October 2007.

The series was adapted into a 25-episode anime television series, which aired on TV Tokyo from October 1, 2002, to March 25, 2003. The anime was licensed in Region 1 by Funimation, which distributed it on DVD and broadcast it on the Funimation Channel, as well as on the Colours TV programming block in 2006. Additionally, the franchise expanded into four light novels and a series of CD dramas.

Plot

Spiral: The Bonds of Reasoning

Two years prior to the start of the series, Ayumu Narumi’s older brother, Kiyotaka, a renowned detective and pianist, vanishes without a trace. Before disappearing, Kiyotaka makes a cryptic phone call to Ayumu, leaving him with a single clue: “Blade Children.” Now a high school freshman, Ayumu becomes entangled in a series of murders and mysterious incidents, all connected to the enigmatic Blade Children. With the help of his school’s journalist, Hiyono Yuizaki, and his sister-in-law, Madoka, Ayumu works to uncover the truth behind the Blade Children and their goals.

The Blade Children are at the heart of the mystery. They are cursed individuals pursued by the Hunters, an organization that seeks to destroy them. Identified by their cat-like eyes (though some lack this trait) and the absence of their seventh right rib, the Blade Children’s origins and purpose are shrouded in secrecy. As Ayumu interacts with five key Blade Children—Kousuke Asazuki, Rio Takeuchi, Eyes Rutherford, Ryoko Takamachi, and Kanone Hilbert—he is tested repeatedly. Over time, the Blade Children come to believe that Ayumu possesses the potential to “save” them, as Kiyotaka once predicted.

The anime adaptation follows the story up to the sixth volume of the manga, comparing the Blade Children to cuckoo birds, creatures that are left in the nests of other birds and grow increasingly dangerous with age. The manga extends the story, delving into Ayumu’s discoveries about the Blade Children’s origins, their connection to Kiyotaka, and the reasons behind Kiyotaka’s belief in Ayumu’s role as their savior.

Thirty years earlier, a man named Yaiba Mizushiro was born missing a rib on his right side, much like the Blade Children. A prodigy, Yaiba founded a secretive and powerful organization. Out of boredom, he launched the “Blade Children Project,” using his DNA to create 80 genetically modified children, each marked by the removal of a rib at birth. These Blade Children inherited Yaiba’s genius but were also cursed to one day lose their self-will and become murderous avatars of Yaiba’s ambition.

Yaiba’s organization fractured into three factions over the Blade Children:

  • The Savers: Supporters of Yaiba’s goals, they sought to protect the Blade Children after Yaiba’s death.
  • The Watchers: Neutral observers who aimed to study the Blade Children and their development.
  • The Hunters: Opponents of Yaiba, they sought to eliminate the Blade Children to prevent their potential danger.

At 36, Yaiba was killed by Kiyotaka Narumi, who became Yaiba’s counterforce. While Yaiba sought destruction, Kiyotaka worked to preserve the balance, fighting to protect the Blade Children from the Hunters and contain the ambitions of the Savers.

Eventually, Ayumu confronts his own counterpart, Hizumi Mizushiro, Yaiba’s younger brother and the one destined to awaken the Blade Children’s violent tendencies. Through his friendship with Hizumi and growing confidence in his own abilities, Ayumu comes to embrace his role as the Blade Children’s savior, leading to a final confrontation that determines their fate.

Spiral: Alive

Spiral: Alive follows Imari Sekiguchi, a girl in love with Shirou Sawamura, an aspiring detective. Before she can confess her feelings, Shirou unexpectedly leaves school to pursue Kiyotaka Narumi. Unbeknownst to Shirou, his girlfriend, Yukine Amanae, is a reluctant murderer. As Imari and Shirou grow closer to uncovering Yukine’s secrets, they become entangled in events connected to the Blade Children.

Toru Saiki, a police investigator, begins probing a series of murders linked to Yukine but refuses to involve Kiyotaka, whom he views as a dangerous figure. The lives of Imari, Shirou, and Saiki intersect as they unravel mysteries surrounding the Blade Children and the shadowy factions pursuing them.

The series reveals that of the 80 original Blade Children, 13 have vanished from the records of the Hunters, Savers, and Watchers. These disappearances were orchestrated by a neutral party, who committed suicide after ensuring the erasure of these individuals. The only surviving record of their existence is the Mikanagi File, created by Professor Isabel Mikanagi, who masterminded their removal. After her death, the file was passed to Yukine’s parents. Following their deaths at the hands of a Hunter, Yukine became the sole bearer of the file’s secrets, stored entirely in her memory.

Returning characters from the original series include Kiyotaka, Kousuke, Ryoko, Kanone, and Madoka, further tying the prequel to the overarching mystery of the Blade Children.

Main characters

Ayumu Narumi

The protagonist of Spiral: The Bonds of Reasoning, Ayumu is a reserved and introspective high school student with exceptional intelligence. He struggles with self-doubt, stemming from the belief that he cannot surpass his older brother, Kiyotaka, a renowned detective and pianist. Despite his insecurities, Ayumu is a skilled pianist and an excellent cook. He shares a deep bond with his sister-in-law, Madoka, and once harbored feelings for her but let them go after her marriage to Kiyotaka. Throughout the series, Ayumu is portrayed as the Blade Children’s sole hope for salvation, with Kiyotaka emphasizing that Hiyono is the most important person in Ayumu’s life.

Hiyono Yuizaki

Hiyono is the cheerful and energetic school journalist who serves as Ayumu’s loyal sidekick. Her quick wit and resourcefulness often come in handy, though her confidence sometimes borders on arrogance. The polar opposite of Ayumu, Hiyono is extroverted and provides much of the series’ comic relief. She is a skilled hacker with access to an extensive network of resources and frequently uses blackmail to achieve her goals. Hiyono’s faith in Ayumu never wavers, and she shows unwavering loyalty and belief in his abilities. However, it is revealed later in the series that Hiyono is a spy planted by Kiyotaka to assist Ayumu. She has also lied about her age, being older than she initially claimed.

Eyes Rutherford

Eyes is a 17-year-old world-class pianist and a member of the Blade Children. Part English, he debuted as a pianist at the age of 14 and is known for his stoic demeanor and unwavering loyalty to Kiyotaka. Eyes is deeply committed to the survival of the Blade Children, often taking on a leadership role among them. He views Ayumu as Kiyotaka’s successor and has great faith in his abilities. Eyes keeps many secrets about the Blade Children and their mysterious origins, making him a key figure in their struggle for survival.

Kanone Hilbert

Kanone is a Blade Child with a dual personality, capable of being charming and kind but also manipulative and ruthless. Once close friends with Eyes Rutherford, their relationship soured over differing views on the Blade Children’s fate. Kanone believes their situation is hopeless and works with the Hunters to destroy those who give false hope. Over time, he regains his sanity and begins to believe in Ayumu’s potential to save the Blade Children. Tragically, Kanone is killed by Hizumi Mizushiro, but not before urging Ayumu to use his death as a turning point. Kanone is also a master fighter who trained many of the Blade Children in combat.

Hizumi Mizushiro

Hizumi is a manga-exclusive character and the “younger brother” of Yaiba Mizushiro. He serves as Ayumu’s counterpart, embodying traits that are opposite to Ayumu’s. Charismatic and outwardly friendly, Hizumi hides his manipulative and sinister nature beneath a cheerful facade. While he initially bonds with Ayumu, Hizumi’s true personality reveals a lonely and desperate individual consumed by despair. He becomes a formidable adversary to Ayumu, representing a significant challenge in the latter part of the series. Main Characters

Ayumu Narumi

The protagonist of Spiral: The Bonds of Reasoning, Ayumu is a reserved and introspective high school student with exceptional intelligence. He struggles with self-doubt, stemming from the belief that he cannot surpass his older brother, Kiyotaka, a renowned detective and pianist. Despite his insecurities, Ayumu is a skilled pianist and an excellent cook. He shares a deep bond with his sister-in-law, Madoka, and once harbored feelings for her but let them go after her marriage to Kiyotaka. Throughout the series, Ayumu is portrayed as the Blade Children’s sole hope for salvation, with Kiyotaka emphasizing that Hiyono is the most important person in Ayumu’s life.

Hiyono Yuizaki

Hiyono is the cheerful and energetic school journalist who serves as Ayumu’s loyal sidekick. Her quick wit and resourcefulness often come in handy, though her confidence sometimes borders on arrogance. The polar opposite of Ayumu, Hiyono is extroverted and provides much of the series’ comic relief. She is a skilled hacker with access to an extensive network of resources and frequently uses blackmail to achieve her goals. Hiyono’s faith in Ayumu never wavers, and she shows unwavering loyalty and belief in his abilities. However, it is revealed later in the series that Hiyono is a spy planted by Kiyotaka to assist Ayumu. She has also lied about her age, being older than she initially claimed.

Eyes Rutherford

Eyes is a 17-year-old world-class pianist and a member of the Blade Children. Part English, he debuted as a pianist at the age of 14 and is known for his stoic demeanor and unwavering loyalty to Kiyotaka. Eyes is deeply committed to the survival of the Blade Children, often taking on a leadership role among them. He views Ayumu as Kiyotaka’s successor and has great faith in his abilities. Eyes keeps many secrets about the Blade Children and their mysterious origins, making him a key figure in their struggle for survival.

Kanone Hilbert

Kanone is a Blade Child with a dual personality, capable of being charming and kind but also manipulative and ruthless. Once close friends with Eyes Rutherford, their relationship soured over differing views on the Blade Children’s fate. Kanone believes their situation is hopeless and works with the Hunters to destroy those who give false hope. Over time, he regains his sanity and begins to believe in Ayumu’s potential to save the Blade Children. Tragically, Kanone is killed by Hizumi Mizushiro, but not before urging Ayumu to use his death as a turning point. Kanone is also a master fighter who trained many of the Blade Children in combat.

Hizumi Mizushiro

Hizumi is a manga-exclusive character and the “younger brother” of Yaiba Mizushiro. He serves as Ayumu’s counterpart, embodying traits that are opposite to Ayumu’s. Charismatic and outwardly friendly, Hizumi hides his manipulative and sinister nature beneath a cheerful facade. While he initially bonds with Ayumu, Hizumi’s true personality reveals a lonely and desperate individual consumed by despair. He becomes a formidable adversary to Ayumu, representing a significant challenge in the latter part of the series.

Media

Manga

Spiral: The Bonds of Reasoning was serialized by Enix in Monthly Shōnen Gangan from 1999 to 2005 and was collected into 15 tankōbon volumes. Initially licensed in North America by Tokyopop in 2005, the release was canceled before publication. Yen Press later acquired the license in 2007, releasing all volumes from October 2007 to April 2011.

The prequel and spin-off series, Spiral: Alive, written by Kyo Shirodaira and illustrated by Eita Mizuno, was serialized in Gangan Wing starting May 2001. In 2006, it moved to Monthly Shōnen Gangan and concluded in June 2008. The series was collected into five tankōbon volumes.

Anime

Spiral: The Bonds of Reasoning was adapted into a 25-episode anime series by J.C.Staff, directed by Shingo Kaneko. It aired on TV Tokyo from October 1, 2002, to March 25, 2003, and covers the first six volumes of the manga, featuring an anime-original ending.

Key details about the anime include:

  • Opening Theme: “Kibouhou” (“Cape of Hope”) by Strawberry Jam
  • Ending Theme: “Kakuteru” (“Cocktail”) by Hysteric Blue
  • Insert Song: “Twinkle My Heart” by Mitake Akira (performed by Hiyono Yuizaki)

The anime incorporates classical piano music, such as:

  • “Jeux d’eau” by Maurice Ravel (Episode 3)
  • “Liebestraume No. 3” by Franz Liszt (Episode 13)
  • “Benediction de Dieu dans la solitude” by Franz Liszt (Episode 21)
  • “Arabesque No. 1” by Claude Debussy (Episode 25)

The soundtrack, composed by Akira Mitake, was released on March 19, 2003.

The anime was licensed for North America by Funimation and released on six DVDs and as a complete box set. It was also broadcast in English on the Funimation Channel and Colours TV in 2006.

Reception

Both the manga and anime adaptations have been praised for their suspenseful storytelling and intricate mystery elements. However, the manga has received minor criticism for overt sexual content.

See also

  • In/Spectre, another manga series written by Kyo Shirodaira.

External links

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