It has an ordinary modern high school background, no superpower setting, and focuses on the restart of life brought about by "rebirth" - the protagonist couple is hit by a truck at the age of 35, and both return to their sophomore year of high school at 17 years old. With the memories of adults and the cherishment of each other, they make up for the regrets of youth, avoid detours in the past, and at the same time protect this love that spans life and death.
