Ver en Cuevana. In the town of Sakurada, where about half of the residents have special abilities, Kei Asai is a high school student and is able to remember everything. Misora Haruki is also a high school student and she has the power to reset the world by 3 days. If they use both of their powers together, they can go back in time by 3 days and retain their memory. They are watched by the administrative bureau.