One day, a big earthquake hits a peaceful school. When they wake up, the world has turned upside down... an unknown FT virus has spread throughout the school, turning everyone into zombies. All the girls are turning into zombies and coming after them!! Aonuma boy (with a huge penis) is saved by Kent, a silent, extremely reclusive sex monster, but he struggles to keep up with the zombies that keep coming at him. In the midst of all this, he is given a vaccine by Dr. Takashima. Apparently, by drinking this and ejaculating inside him, the zombie virus will be inactivated. In order to save the school, we ejaculated inside him over and over again!! But what awaited him in the end was... 2nd series.