A forbidden romance between a teacher and student triggers misfortune for Mayu, the most popular beautiful girl at school. Their secret kiss on the rooftop is witnessed by other students, who use it to blackmail and rape her in a humiliating ordeal. The abuse escalates as she continues to receive disturbing demands from the students, forcing her to obey solely to protect her teacher. What began as a passionate relationship gradually twists into something grotesque, and Mayu is treated as a sex slave in front of her classmates, repeatedly creampie fucked one after another. As the ordeal progresses, Mayu's mind slowly breaks down, until she is ultimately completely dominated. The story begins with pure love, descending step by step into cruel reality.