After an accident, Yu Youyou is reborn in her second year of high school.
Fragments of memories from her previous life hint at the tragic ending that the story is destined to reach.
This time, she chooses to stop watching from the sidelines and become the one who writes the story.
But being reborn is never just a copy-and-paste of what happened before.
Three mysterious boys who enter her life become blazing wild cards in her youth.
In the bravest year of their lives, the boys make a promise to meet again sixteen years later.
As for the story's new ending, she chooses to leave it for those who return to keep their promise sixteen years later to write together.