アンダープリンセス

Youichi learns about English architecture. One day, he goes to the underground to do some research. Dank and fetid..., suddenly he is struck by a flash flood. He somehow escapes into a cave, and loses his consciousness. When he wakes up, there is a woman looking down at him. Her name is Anrietta, who has been confined in the basement since she was a girl, and insulted by men every day. He decides to save her in return for what she did to him....

[From ErogeShop]