"That summer was a mistake." Hajime Nonokawa ends up accidentally reuniting with his childhood friend Keisuke Koya after going back to his hometown for the first time since it was turned into a reservoir 12 years ago. 12 years ago, Hajime suddenly realized he had feelings for his friend, but he chose to hide those feelings away... What will happen during this reunion? Will his feelings resurface again?

(Source: Renta!)