Reijou Gakuen 2 ~Shigyaku no Hanazono~

Keisuke had a promised future, a well-paid job and a beautiful fiancee.... But he was betrayed by a man and lost everything. He decides to take revenge and starts working at a girls' high school. By taking advantage of his position as a teacher, he rapes female students randomly. As he goes like this, he gets to know a secret about the school. Yes, there was a serial murder case at the school in the past.... [From ErogeShop]