One day, a great earthquake struck a peaceful school. When I woke up, the world was in ruins… The campus was overrun with an unknown FT virus, and everyone had turned into zombies. All the girls had turned into zombies and were closing in on me！！ In this situation, it was a silent, strongest hikkikomori sex monster, Kent-kun, who saved the Aonuma boy (Big Dick). But as the zombies kept coming at them one after another, they were at their wits' end. Just then, they received a vaccine from Takashima-sensei (Dr. Takashima). Apparently, drinking this and performing internal ejaculation would deactivate the zombie virus. In order to save the school, we performed internal ejaculation over and over again！！ But what awaited us in the end was…・. 2nd Series.
