Harunagi Seika's husband's best friend takes refuge in their home. He appears to be a friendly, easygoing man, gradually making Seika feel at ease around him. However, his true nature is malicious. Each time he defiles her body, he becomes more obsessed with her. To ensure she won't turn him in, he begins using fear and domination to control her. Trapped and with no escape, Seika has no choice but to submit to him. This fateful decision drastically alters the course of her life.