One day, a massive earthquake struck a peaceful school. When I woke up, the world was in ruins... The school was infested with an unknown FT virus, and everyone had turned into zombies. The girls were all zombies and coming at me. A silent, strongest hikikomori sex monster, Kent, saved me, but I was struggling with the zombies coming at me one after another. In the midst of this, I received a vaccine from Dr. Takashima. It seems that drinking this and creampieing will deactivate the zombie virus. We creampied over and over again to save the school. But what was waiting for us in the end... 2nd Series.