"Riku" was an honor student who grew up in a wealthy family and had no troubles. One day, on his way home from school, he was discovered by a half-gray and kidnapped. Held in a room in an apartment building, she became prey to the sexual desires of lecherous men. Even when I refused in tears, I could not accept it, and I continued to be raped every day. And a few weeks passed... Riku's personality collapsed, and in her belly was a child with unknown seeds. Continuous vaginal ejaculation until pregnancy... the whole story of a completely absurd and terrible act of reproduction.