Aki Toujou resides with his stepbrother Saku, who is studying at a university. Aki observes Saku's relentless pursuit of women, leading to his infamous label as a promiscuous man. In contrast, Aki despises women and experiences physical discomfort in their presence. Nevertheless, he ardently cherishes his brother and fulfills any request, unquestioningly. However, their unshakeable bond encounters a severe obstacle when a brief three-minute quietness alters their lives drastically.