Yuri, a housewife, was happily chatting with her best friend Hideki about everyday life. One day, a salesman named Kimura visits to deliver insurance documents. Hideki, noticing Kimura's presence, reveals she has feelings for him. Yuri is then asked to help bring them closer. However, Kimura directly confesses, "I'm interested in you." Yuri is shaken by his words. Overpowered by Kimura's advances, she loses her heart and ends up sleeping with him. Confused at first, she gradually becomes deeply attracted to him. The story follows her inner struggle to come to terms with these feelings and the path her emotions ultimately take.