Mitsuyo never misses her daily jog. Her breasts are small but beautifully shaped, and her peach-like buttocks bounce and jiggle whenever she runs. Tatsuya, an unemployed man who lives next door, has been secretly eyeing her body. One day, on her way home from a jog, Tatsuya barges in on Mitsuyo while her husband is at work, and they end up having sex... It's a long-awaited pleasure that overcomes any sense of guilt.