Reika, who married a man with a stepson. Although she has a harmonious relationship with her husband, things weren't going well between her and her introverted stepson, Yuuki. Then, at her husband's suggestion, they went on a hot spring trip, and the two finally began to open up to each other... However, Yuuki, who had secretly harbored feelings for Reika, couldn't hold back and assaulted her while she was asleep. Reika writhed intensely under his youthful and forceful caresses. The sex, perfectly compatible in a way she had never experienced with her husband, made her body unconsciously ache for his cock...
