Katteni Kaizō

is a Japanese manga series written and illustrated by Kōji Kumeta. It was serialized in Shogakukan's ''Weekly Shōnen Sunday'' from May 1998 to August 2004, with its chapters collected in 26 ''tankōbon'' volumes. An original video animation (OVA) series adaptation produced by Shaft was released from May to October 2011.

Plot

The series follows the strange goings-on that surround Kaizō Katsu, an eccentric student who has a unique perspective on the world around him. He was once a child prodigy but at the age of 7, his childhood friend Umi Natori kicked him off the jungle gym and he suffered a head trauma, changing his personality. He gained a huge interest in various weird things such as UFOs and ghosts.

At 17, Kaizō was hit by a human anatomy model that accidentally dropped from the second floor of the school building. Being revived with a defibrillator, he starts to believe he was rebuilt as a cyborg'' bread. She is also homeless, skint, eats anything, and can be seen popping up in weird places together with her strange mother.
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:Chitan's junior at his part time job. Chitan aims to be close to her, but instead ends up following her around and stalking her. Afraid of her stalker, she is comforted by Chitan, not knowing that he is the stalker himself.
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:Chitan's twin brother, but without Chitan's personality faults. At his first appearance, he is identical to Chitan except for his skin tone. As the series progresses, he grows taller and more good-looking, at the same rate as Chitan grows smaller and uglier. Is friends with Kaizō, or maybe more (?).
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:One of Kaizō's class mates. An otaku who refuses to reveal that she is one, but she often slips and reveals herself. Her whole family are otaku as well.
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:Suzu's self-crowned nemesis. Used to be in a pop-group with Suzu until Suzu quit, leaving Jun stranded in Tokyo after moving there from Osaka. She now seeks revenge for that on Suzu.
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:Kaizō's home room teacher. A single woman, 26 years old. Wears sailor fuku in school.
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:The principal of Kaizō's high school. He is a masochist, and has his own dungeon in the school. Seems to enjoy many of Kaizō's delusional ideas.
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:Kumeta's self insert. He is tormented by his editors, his manga does not sell, and he is very bitter. He becomes more and more broken as the series goes on.

Media

Manga

''Katteni Kaizō'' is written and illustrated by Kōji Kumeta. It was serialized in Shogakukan's ''Weekly Shōnen Sunday'' from May 6, 1998, to August 4, 2004. Shogakukan collected its chapters in twenty-six ''tankōbon'' volumes, released from January 18, 1999, to September 17, 2004. In 2010, Shogakukan started re-releasing the manga in a 14-volume ''shinsōban'' edition, to celebrate Kumeta's 20th anniversary as a manga creator. The volumes were published from April 16, 2010, to June 17, 2011.

Volumes

Original video animation

In January 2011, an original video animation (OVA) adaptation of the series was announced. Three volumes, each one including two episodes, were released from May 25 to October 26, 2011.

The series was directed by Naoyuki Tatsuwa under the chief direction of Akiyuki Shinbo at Shaft. The series was written by Katsuhiko Takayama and Shaft, features character designs from Hiroki Yamamura (at the time from Studio Pastoral), and has music by Ruka Kawada. The episodes are split into segments, and some episode's segments were outsourced to other studios: episode 2 and 6's B-parts were outsourced to Studio Pastoral, and episode 5's A and B-parts were outsourced to Asahi Production. Yamamura also served as chief animation director across the series, and Yuka Kudou also acted as chief animation director for episode 5's A and B parts.

Episodes

Notes

References

External links

Anime official website

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{{Naoyuki Tatsuwa

Comedy anime and manga
Kōji Kumeta
Shaft (company)
Shogakukan manga
Shōnen manga