Sakurada is a town where half of the residents have special abilities. The residents live a peaceful life under the management of the "Administration Bureau" responsible for monitoring people with special abilities. "I want to wipe away the tears of the person in front of me", "I want to convey my voice to someone". With this gentle and subtle "wishes", the abilities of this town are born. Megumi Asai has the ability of "memory retention" that can recall all the memories of past experiences, and Misora Harusaki has the ability of "restart" that can "rewind the world up to 3 days". She herself was affected by "restart" and lost her memory, but by working together with Megumi who never forgets anything, the two were able to relive the past and change the present. However, there is a "past" that even these two people cannot relive. That is, two years ago, their classmate Sumire Soma disappeared due to the influence of "restart". The two belong to a club called "Service Club". While completing various commissions from students every day, they are looking for a way to revive Sumire Soma. They received a commission - "I hope to revive the dead cat." In order to eliminate the "sorrow" that happened in the past, the boy and the girl traveled through time to change the world -