Original CG anime project by studio Craftar and Hulu Japan.

The story is set in Japan in 2020. The story centers on Shin Hazama, and a version of himself who led a different life in another Japan appears. A crack opens in the everyday life that he thought was impossible to change. Boys and girls have to decide what to think and choose when the world changes completely. The battle with another world and another self begins.

(Source: Anime News Network)