Synopsis
In her second year of high school, Naho Takamiya starts the day in a panic after oversleeping. She stumbles upon a peculiar letter addressed to her, allegedly written by her future self at age 26. Although initially skeptical, Naho's doubts vanish as the letter's forecasts begin to materialize. The correspondence reveals a future steeped in regret, urging her younger self to amend past errors. It specifically warns Naho to take care of the new transfer student, Kakeru Naruse, a figure notably missing from her future. Guided by these instructions, Naho endeavors to protect Kakeru, hoping to prevent the recurrence of her future sorrows.
