Nearly half the population of Sakurada, a small town near the Pacific Ocean, possesses some sort of unique power. These abilities range from entering the mind of a cat to resetting the world back to a specific point in the past. A group known as the "Kanrikyoku" oversees and regulates the use of these powers. Asai Kei and Haruki Misora work for their school's club called the "Houshi" club, which carries out any missions assigned by the Kanrikyoku. Misora has the ability to reset the world by 3 days. This means that all events and any memories of the past 3 days that "could have" happened, never occurred. Kei has the ability to "remember" the past. Even after Misora uses her powers to reset the world back 3 days, Kei retains those 3 days in his memory. By combining their powers, these two tackle missions issued by the Kanrikyoku.
