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Katte ni Kaizou

Alternative Titles

Synonyms: Katteni Kaizou
Japanese: かってに改蔵


Type: OVA
Episodes: 6
Status: Finished Airing
Aired: May 23, 2011 to Oct 26, 2011
Producers: None found, add some
Licensors: None found, add some
Studios: Shaft
Source: Manga
Duration: 23 min. per ep.
Rating: R+ - Mild Nudity


Score: 6.961 (scored by 8,022 users)
1 indicates a weighted score. Please note that 'Not yet aired' titles are excluded.
Ranked: #38742
2 based on the top anime page. Please note that 'Not yet aired' and 'R18+' titles are excluded.
Popularity: #2719
Members: 24,418
Favorites: 30
Ranked #3874Popularity #2719Members 24,418
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Episodes: /6
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Katsu Kaizou is a very gullible, 17-year-old high school student and a believer in science fiction, aliens, ghosts, UFOs, conspiracies, etc. He thinks that everything going on around him is the result of some sort of alien plot to take over the world. Each story is pretty much self-contained and is completely bizarre. Kaizou joins the school's science club, makes new friends, and ends up coming in contact with all sorts of strange things like log people, deadly sushi, pee-blades, scary infections, robot invasions, ghosts, living dolls, and more!


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Related Anime

Characters & Voice Actors

Shintani, Ryouko
Tachiki, Fumihiko
Ishida, Akira
Takaoka, Binbin
Nagata, Yoriko


Ooshima, Miku
Assistant Producer
Shinbou, Akiyuki

Edit Opening Theme

"Katte ni Kaizou Shitemo Iize (かってに改造してもいいぜ)" by Ichirou Mizuki & Tokusatsu (水木一郎と特撮)

Edit Ending Theme

"Nani ga Nani de Nani nano... (ナニがナニでナニなの・・・)" by Ryoko Shintani (新☆谷良子)

More reviewsReviews

Aug 30, 2013
Hironono (All reviews)
This by far is one of the most unique anime out there. I mean everything is unique, the storyline, the characters, even the animation! This anime can be greatly appreciated by comedy lovers and users who have a passion for let's say 'crazed' storylines. But be warned, most of the comedy in this one are 'dirty', in other words related to sex, and are just weird. Compared to other comedy/gag anime out there this has to be the best.

Now let's take a deeper look at the sound and animation since we identified most of the other areas. I would give the sound a 9/10, since read more
Jul 7, 2012
halfshadows (All reviews)
This series is well written, has good artwork, good animation, good characters, and a decent soundtrack. So why only a 7? The reason it's so good, and the reason it's not a 10 is the same: it's a prototype for Sayonara Zetsubou Sensei.

It's pretty simple really. The characters look, sound, and act like the characters in SZS. The animation, soundtrack, sound effects are all similar for obvious reasons. The quirky randomness is the same. The way the story seems to take place at school, but the characters meet around town and engage in silliness is the same.

But as stated earlier, it's a prototype. read more
Jul 31, 2014
GhostMaster1 (All reviews)
Looking for an anime with the wackiest, silliest, dirtiest humor out there? Want an anime that's so ridiculous and over the top that it would put other comedy anime to shame? Look no further than Katte Ni Kaizou, translated as, "Kaizou Who Does As He Pleases!"
Story: 5
To tell you the truth, the story description on the site is only true for the first two episodes. The whole idea about being a gullible boy with delusions isn't really carried out throughout the rest of the series. Still, it doesn't detract from how ridiculous this anime is.
Art: 10
The art is pretty memorable. Shaft made the characters' read more
Jan 17, 2017
Sidewinder51 (All reviews)
Rate of 6(fine)
seen via english subtitles

art-original and stands out
sound- crisp and clear. Characters personality was matched by the voices.

art-very white. I am guessing they were going for either a highlight for the characters or wanted each character to have highlights in their hair. Yet, there was real benefit in doing that. There was nothing gained nor lost. I suppose it makes for an easier identification in random anime shows casts. For me, it would have been more pleasant on the eyes if they ditched it. Lastly, the haircut art designs were somewhat copied and pasted in. Do you recall bowl haircuts? if not, they are read more


Recent News

SHAFT To Animate Kumeta Koji's Manga Katte ni Kaizo [Update Feb 9]

According to Natalie, Kumeta Kouji's manga Katte ni Kaizo was announced to get an OVA anime adaptation. The first volume will be released on April 27th. The pro...read more

Recent Forum Discussion

Poll: Katte ni Kaizou Episode 3 Discussion
tsubasalover - Aug 9, 2011
19 replies by cptlee39 »»
Apr 19, 8:43 AM
Poll: Katte ni Kaizou Episode 2 Discussion ( 1 2 )
tsubasalover - May 26, 2011
54 replies by cptlee39 »»
Apr 14, 12:23 PM