Junpo, who lives with his son and daughter-in-law, has one problem: he secretly gets excited when he occasionally hears their lovemaking. To avoid having impure thoughts, Junpo keeps his distance. However, his daughter-in-law Tsubasa carelessly approaches him, making him feel aroused, and he ends up pushing her down. Unable to control the ache in her body, Tsubasa is overwhelmed by his intense and greedy actions that her husband never performs. Junpo, having tasted the forbidden fruit, continues to ravage her, and before long, she starts to accept it...
