Childhood friends use time travel to try to avert tragedy in this bittersweet book about growing up, love, and loss–by the creators of the light novel and manga series The Tunnel to Summer, the Exit of Goodbyes that inspired an anime film (also from Seven Seas).

After disturbing experiences in the city, seventeen-year-old Kanae flees back to his childhood home on a remote island. Once there, he reunites with his old friend and first love, Akari. But suddenly, Kanae finds himself propelled four days into the future. Akari’s older brother is now dead and Kanae has no memory of what happened in the intervening four days. Can Kanae travel back in time to prevent the death of Akari’s brother?