Ryuichi's first sex doesn't go well and he can't get an erection since then. He starts to work at a girl's high school as a janitor but his work attitudes are terrible, so his dismissal is decided. When he is depressed to hear that, he meets Midori. And he gets an erection while talking to her. He can't stand it and rapes her. He has only one month to go so he decides to spend his time at school raping as many girls as possible....

The main character Ryu, along with his younger sister lives a seemingly normal life, goes to school, meets with friends, kicked a noodle from time to time, and in General doing everything that is usually normal Teens his age. That's just fate sometimes doesn't like boring stories of someone's life, and it so happened that they had to find a elixir, but not simple, and the one that gives the drinker girls big Breasts, but guys itself so to speak