Spiral: Suiri no Kizuna

Spiral: Bond of Reasoning

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Alternative Titles

Japanese: スパイラル -推理の絆-
English: Spiral: Bond of Reasoning
More titles


Type: TV
Episodes: 25
Status: Finished Airing
Aired: Oct 1, 2002 to Mar 25, 2003
Premiered: Fall 2002
Broadcast: Tuesdays at 18:00 (JST)
Licensors: Funimation
Studios: J.C.Staff
Source: Manga
Genres: DramaDrama, MysteryMystery
Demographic: ShounenShounen
Duration: 23 min. per ep.
Rating: PG-13 - Teens 13 or older


Score: 7.231 (scored by 2211922,119 users)
1 indicates a weighted score.
Ranked: #28452
2 based on the top anime page. Please note that 'Not yet aired' and 'R18+' titles are excluded.
Popularity: #2655
Members: 49,939
Favorites: 275

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Ranked #2845Popularity #2655Members 49,939
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Episodes: /25
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Ayumu Narumi has lived all his life in the shadow of his famous detective brother, Kiyotaka. However, Kiyotaka disappeared two years ago, leaving behind his wife Madoka and Ayumu himself, along with a cryptic message about the "Blade Children."

One day, a girl at Ayumu's school suddenly dies. What seemed like a suicide at first glance turns out to be a murder, and Ayumu is the prime suspect. While investigating the person responsible for framing him, he discovers that the mysterious Blade Children are involved—and they somehow know Kiyotaka personally. Ayumu soon finds out just how dangerous the Blade Children are and learns that, in reality, he and Kiyotaka are intertwined more closely than he had ever believed.

[Written by MAL Rewrite]


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Related Anime

Characters & Voice Actors


Cook, Justin
Watson, Barry
Hosoda, Mamoru
Director, Storyboard
Kaneko, Shingo
Director, Episode Director, Storyboard, Key Animation


Opening Theme

Apple Music
Amazon Music
Youtube Music
"Kibouhou (希望峰)" by Strawberry Jam

Ending Theme

"Cocktail" by Hysteric Blue

Jul 16, 2007
Ria (All reviews)
Spiral is one of those animes that gets a lot of mixed reviews. In my opinion, however, it is one of the greatest animes ever created for many reasons. It\'s not completely perfect, of course -- I don\'t believe anything is perfect -- but it comes pretty darn close.


\"I\'m going to pursue the mystery of the Blade Children.\" This single line, spoken by Kiyotaka Narumi, is the premise for the entire show. Above all else, Spiral is a mystery anime, and it centers around what, exactly, the Blade Children are. It\'s a fascinating idea, that, most unfortunately, is never fully read more
May 11, 2008
Darkmage530 (All reviews)
Spiral was an interesting show. The story grabs you right away, spins you around and confuses you (in a positive way of course) It really makes you want to keep watching to find out what happens next. Unfortunately the story doesn't keep up with it's great start. It starts to slow down and less questions get answered. This is my biggest disappointment with the show, if the story had kept up with the beginning it would have been an absolutely incredible show.

The art work is mediocre and at times poorly done. The colors seem kind of dull. The read more
Jul 22, 2007
palladium (All reviews)
When I finished the first episode, I couldn't help myself to continue on. This anime probably has one of the best beginnings I've ever seen. The plot rapidly unfolds about the relationship between Narumi and the Blade Children, as well as Hiyomi (the main female protagonist).The audience was entertained with how Narumi used logical deductions to solve crimes, which even the police are having a hard time with, and life-threatening situations designed by the Blade Children to 'test' him. Some romance were evident in the early part of the series, which blends in nicely with Narumi's somewhat inability to socialize.

Having said that, the series has read more
Dec 1, 2008
dreams-of-ivy (All reviews)
The thing most people don't realize about Spiral, and the reason, I think, it has such a mixed review, is that the manga and the anime go hand in hand. Questions that are not answered in the anime are in the manga, points are brought up in the anime that aren't raised in the manga etc.

Most importantly though is the fact that the Blade children's past is meant to be very ambiguous. There are questions that are NOT meant to be answered because they would ruin the mystery of the characters or the show as a whole.

In my opinion, it is one of the most read more


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Recent Forum Discussion

Poll: Spiral: Suiri no Kizuna Episode 25 Discussion
mikzflava - Aug 5, 2010
32 replies by nomad8 »»
Apr 18, 5:43 PM
Poll: Spiral: Suiri no Kizuna Episode 24 Discussion
maruf92bisj - Jun 18, 2014
3 replies by Ashhk »»
Jun 29, 2020 3:31 PM