In the town of Sakurada, half the population possess unique powers.
Its inhabitants live in peace, with the special powers observed by the Administration Bureau.
"I want to erase the tears of the person in front of me." "I want my voice to reach somebody."
The town's powers were born to grant kind, tender wishes such as these.
Kei Asai has the power of 'Memory Keep', which allows the him to fully remember past experiences.
Misora Haruki has the power of 'Reset', which can make the world go back up to 3 days.
When Misora uses this power, she herself also loses her memories of the time before the Reset, but she teams up with Kei, who will not forget no matter what happens. Together they can remake the past and change the present.
However, there is a 'past' that they cannot change. 2 years before, Kei's classmate, Sumire Souma, was lost thanks to the effect of a Reset.
Kei and Misora spend their days as part of the 'Volunteer Club' , where they fulfil requests from other students. At the same time, they search for a way to bring back Sumire.
They suddenly get a very unexpected request- "I want you to bring back my dead cat."
In order to erase the 'sadness' of the past, this boy and girl will jump through time, changing the world.