Despite having no dissatisfaction with life, Mari, the wife, felt a sense of incompleteness in her sex life with her husband. One day, her husband, who was drunk, brought his subordinate, Kamimura, home. Her husband quickly fell asleep, and while Mari was entertaining Kamimura, he suddenly began to fondle her breasts. Unable to control his feelings upon seeing Mari's large, provocatively thrust-out breasts, he proceeded to roughly caress her breasts and inserted his penis. Mari experienced a pleasure unlike any she had felt with her husband. From then on, Mari eagerly awaited Kamimura's return.