My wife was hospitalized for her first childbirth, leaving me alone at home. Her mother, Machiko Kawahara, came to Tokyo to help with housework. She had always been a voluptuous milf with big tits, and I'd secretly felt a strong sexual attraction toward her. Though I felt guilty toward my wife, I could no longer suppress my desire—tonight, I finally touched her body again after so long. The hospitalization created a unique atmosphere, bringing unexpected changes to our marital relationship. Amid the tension of an unusual situation and the warmth of family, forbidden feelings began to stir.