Contrary to her serious and gentle husband, Minami's uncle Fumita is mischievously playful despite his age. He constantly tries to get close to Minami, but she always firmly rejects him—until Fumita skillfully uncovers her hidden sexual frustration and tempts her into giving in. Using slow, sensual techniques unlike anything her husband has ever shown, he arouses her body to intense pleasures she's never experienced before, pushing her to repeated, overwhelming orgasms. Even though Minami continues resisting him afterward, her awakened body grows increasingly drawn to Fumita's advances, losing herself more each time.