Kara no Shoujo

Based on the erotic game by Innocent Grey. Reiji is a private detective. One day, he receives a strange offer from a girl, "Please look for... me. True me." At that time, a series of abnormal murder cases happen and Reiji is offered to investigate it as well. There is a girls' high school Yukari, Reiji's younger sister, goes and two female students are missing. Tokio, vice principal of the school...