It's been a year since Takeru, his older brother, married his wife, Tsubasa. Yuuta has been thinking about Tsubasa since the beginning of their marriage. Then, one day, an unexpected opportunity arrives. Takeru says he'll be working overtime and will be late. Yuuta takes this opportunity to Tsubasa Tsubasa and pours all his pent-up love into her. Tsubasa, who has not been satisfied with sex with the busy Takeru, begins to feel something inadvertently...