Kyouhaku

Asuka Akiyama has been an ordinary, innocent Japanese schoolgirl, until a fateful moment changed her life forever. One day, after talking to a nice-looking boy named Ryosuke, Asuka came home and masturbated in the shower. The next day, she found out that someone has taken photos of her during that intimate moment. From that point on, Asuka becomes involved in a violent chain of events. Will she be able to retain her purity and be together with Ryosuke, or put in danger everyone she cares for and become a willing sex slave?

(Source: Moby Games)