Katte ni Kaizou is a oVA anime that premiered in spring 2011, produced by Shaft.

About the production: the story comes from a manga, there are 6 episodes of about 23 minutes and its current status is "finished".

Its main genres are comedy and sci-fi, with themes such as Parody, Surreal Comedy, School and Meta.

On AniList, Katte ni Kaizou has an average score of 66%, a good score, and appears on 8,724 users' lists.

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!

Official synopsis from AniList.