Hiroshi goes to his neighbor Yuriko's house to retrieve a handkerchief his mother left behind, and while he's there, he's asked to bring her some tea. While she's preparing the tea, he discovers an unusually large bra among the laundry and, unable to resist, sniffs it, becoming aroused. Just then, Yuriko returns with the tea, and Hiroshi panics, stuffing the bra into his pants pocket. Seeing his suspicious behavior, Yuriko confronts him, and flustered, he pulls the bra out. "I'm sorry! Please don't tell my mom! It was just a moment of weakness!" he pleads innocently. Rather than getting angry, Yuriko feels something inside her switch on.