Isshiki's daughter, Kayo, got married and decided to live with her son-in-law, Masato, at her parents' house.Masato, who often works from home, was a reassuring presence for Momoko, a full-time housewife.One day, Momoko instinctively kisses Masato, who has passed out at dinner alone.When Masato wakes up, he can't control her secret desire for Momoko, who has a lot of body to ripen in her woman's prime, and forcibly robs her lips.And the two who have crossed the line let out the sexual desires that attract each other.