Wan works as an office worker at a small advertising agency. In this company where only men work, sexually harassing remarks are commonplace. One day, Wan is forced to come to work without a bra, which is discovered, and she is teased by those around her for being "No Bra Girl." "No matter how much no one pays attention to you, I don't think it's right to come to the office without a bra." While working overtime alone, her boss massages Yuwa's shoulders and gradually moves his hands down. "If you don't wear a bra, your nipples will rub and become sensitive, won't they?" And so her boss's days of nipple harassment began.