Kei teaches at a high school while Haruto, who is not related by blood, is a strikingly handsome model with abundant talent. Haruto harbors a strong obsession with his older brother, creating a complex dynamic between them that Kei attempts to navigate. Despite the complications, Kei ultimately comes to accept the situation as routine. Suddenly, Haruto's biological father makes an unexpected appearance, disrupting everything. The plot of this sorrowful tale is driven by destiny.