Synopsis

In her sophomore year of high school, Takamiya Naho receives a mysterious letter — sent from herself, ten years in the future. The letter reveals that she will fall in love with a transfer student, Naruse Kakeru, who is destined to die one year later. Though initially dismissing it as a prank, Naho gradually begins to trust the letter as its predictions unfold one after another. Determined not to repeat the same regrets as her 26-year-old self, she embarks on a mission to change fate and save Kakeru’s life.