During the summer vacation, which continues to be extremely hot on record, Ryosuke announces to his aunt Kotoha that he has found a girlfriend for the first time.However, Kotonoha, who has lost her husband and is suffering from loneliness, loses her reason due to her innocence.She steals away from her family's eyes and gently seduces them by saying, ``Practice having sex,'' but the pretense of guidance gradually wears off and it turns into a frenzied lust.On the final day, Kotoha restrains Ryosuke's hands and feet and indulges in ejaculation control that squeezes out his youthful youth to the limit.During the seven days of immorality, Ryosuke had no way to resist his aunt's poisonous fangs...
