Nobody knows where they came from. They parasitize in human beings, take control of them and change their bodies into hideous monsters (Necro-borg). The Necro-borg fight each other until the…

Toru recalls his life in the 1960s, when his friend Kizuki killed himself and he grew close to Naoko, Kizuki’s girlfriend, and another woman, the outgoing, lively Midori.

A tale of delinquent and lazy school girls. In their efforts to cut remedial summer math class, they end up poisoning and replacing the school’s brass band.