Yumi has been married for three months to a man with a stepchild. Her husband and her husband are on good terms, but her relationship with her son, Kazuki, is not. At her husband's suggestion, she goes on a trip to a hot spring, and the two of them grow closer. However, Kazuki, who felt that Yumi was a woman, could not control his rising desire and attacked Yumi while she was asleep. Yumi is made to cum again and again by his intense and earnest piston and is in agony. her husband