The day I returned home to my wife's parents' house after a long time. Though nervous, my stepmother warmly welcomed me. That night, while I was in the bath, she offered to wash my back. I was secretly happy, but her appearance was so erotic that I felt embarrassed and tried to refuse—yet she firmly insisted, pushing me to let her wash me. The two of us alone in the small bathroom. Was she still in the middle of cleaning...? At that moment, she appeared before me braless. My heart pounding, she started talking to me. When I opened up about marital troubles, I confessed that my wife and I hadn't had sex in over half a year. Hearing this, my stepmother made an unexpected proposal: "Eita... you must be so pent up, it's heartbreaking. If you're okay with it, let me help you relieve that tension?" I tried to refuse, feeling guilty, but ended up giving in to her words. Her sexual skills easily seduced me, completely shattering my reason. Before I knew it, I was entranced by my stepmother, whispering, "Mother-in-law... you're way better than my wife..."