Hiroshi goes to his neighbor Yuriko's house to retrieve a handkerchief that his mother left behind. When Yuriko invites him in to prepare tea, she discovers a huge bra she has never seen before among the laundry that has been brought in, and she can't help but smell it and get excited. However, when Yuriko returns with the tea, Hiroshi hurriedly hides the bra in his trousers, and when Yuriko confronts him about his strange behavior, she finds the bra he'd hidden. "I'm sorry! Don't tell Mom! It was just a spur of the moment thing!" Yuriko's innocent reaction turns her on, and instead of getting angry...