the story follows the crazy misadventures of kaizo katsu, a former child prodigy turned weirdo after his female childhood friend, umi, kicked him off a jungle gym in the playground, and he got a huge bump in the head. with this set up, kaizo (believes he is a cyborg) and his classmates, umi (will go revealing her dark side with every chapter), suzu, and chitan (an inferior being?), will treat in every chapter a different topic of life with the hilarious and interesting way of thinking of the author kumeta. the attacks of different geniuses/weirdos will create a lot of funny situations. included is a story called yuuryoubukken chuukaishimasu (a brooding, gloomy property) in vol. 13: a young man moves from his hometown to tokyo to attend university there and looks for cheap accommodation. he does indeed find something, but what is the non-monetary price for this?