Due to her husband's work transfer, Riko, a secretly well-endowed married woman, lives alone with her son. Among her son's friends, there are some who see her not as "a friend's mother," but simply as a desirable woman. One day, one of them crosses the line into a brutal rape. Having long abstained from sex, Riko helplessly finds herself experiencing pleasure. Unwilling to admit her body's response, she falls victim to one friend after another, torn between guilt and arousal. As young men take turns violating her, her mind and body are shaken, and she gradually loses all sense of reason. The raw, intense transformation of her emotions drives this thrilling, realistic NTR story.