The story is set in a melancholic near-future world. Yamagishi, who was expelled from a school for trying to create human clones, plans to research the explosive form of evolution known as the Cambrian. After undergoing his own physical experiments, Yamagishi transformed into a creepy lump of flesh, and inserted his hands into the restrained Keiko's mouth, secret gate, and anus, and poured a huge amount of turbid fluid into her. go. rnrn