The heroine of this work is Chisato Morisaki, a female student at Sonomiya Gakuen, who has produced many winners in all sports competitions.She's ahead of her national competition appearances in both track and field and swimming.A serious and stoic athlete, she is abstaining from her practice.Such a beautiful girl is caught by a terrifying group of perverts and falls prey to the overwhelming Ryo*.Even as she sobs in shame, she panics when she exposes her dirty side.The door to her lecherous world was forced open.