Kanna, who was on a hot spring trip with her husband after leaving her children at her parents' house, meets two strong black men who are participating in a Japanese bodybuilding competition at the inn. What incredible muscles! Her husband feels like a child. While she is thinking about this alone in the open-air bath, the black man from before accidentally enters the open-air bath. In a panic, she tries to explain in broken English, but the towel around the black man's waist comes undone, and when Kanna sees his strong muscles and big cock, her body starts to ache involuntarily...