Ogamijima which full of green floating in the Seto Inland Sea and is calm. However, it becomes the ground filled with greed and insanity now. UNKNOWN-LEVEL4 the infection disaster that should have converged recurred in this ground.

Hinata which came over to help a younger brother, it went to the sports center while protecting Akari. But there has already become the place of the abuse. Airi of the cheer part same as a Akari, it was caught small buttocks by an infected person and was hit vagina intensely. The thiapart has already declined in the hand of the person of abuse. And the evil power of the person of abuse approaches Hinata and the Akari in the summer.