Miko is a popular and serious female student at school. She serves as the discipline committee member, spending her days purely and uprightly with her boyfriend Sei, who is also a committee member. One day, she spotted Kentaro, a fellow student from the same school, on the street. Kentaro was a troublemaker known for causing violence in the classroom. Later, driven by a sense of justice, Miko went to Kentaro's house and found him with Ishigami Tadashi, a yakuza member. Before she knew it, they pinned her down, and she was locked inside the house, becoming a victim of grim sexual acts…
