Katte ni Kaizou

Kaizou Katsu is certain that he has been turned into a cyborg. A school accident and a careless remark from science-club president Suzu are all the proof he needs, and he throws himself into hunting imagined enemies.

His childhood friend Umi and the other club members are hardly equipped to restore common sense. Their peculiar obsessions turn everyday school life into arguments, bizarre theories and disasters in which Kaizou is rarely the strangest person in the room.