While commuting, Haneda happens to see Yumi being molested and peers through a gap when she remains silent, only to be mistaken for the culprit himself. Later he meets her again on a packed train and, pressed against her by the crowd, gives in to temptation and begins touching her. Unable to cry out, Yumi nevertheless feels unexpected pleasure. She cannot forget it, and soon starts commuting without a bra in search of the same thrill, offering her body again. The release also includes simultaneous close-up views from multiple angles for added realism.