Ryoshuu

When Shuichi is about to commit suicide, a girl talks to him. She gives him a pill, with which he can die without pain. Instead, she tells him to sexually train a girl.... The man who decides to say good-bye to this world is offered a sex training life in an isolated house. The target girl is also the one who decides to commit suicide.... Since she is forcibly brought into the house, she strongly resists it while being sexually assaulted. It's his mission to make her a sex slave within two weeks. There is a training room in the basement.... A strange life of a guy and a girl now starts....

[From ErogeShop]