Yurika, a married woman who lives with her son. One day, a college student's son brings his friends to his house to write an assignment report. Late at night, her friend who witnessed Yurika indulging in masturbation in her bedroom commits Yurika without being able to bear the foolishness. Even though she is fucked, her body reacts to her long-forgotten pleasure, and she can't resist the climax that comes, and Yurika drowns in pleasure.
