Coffee Moon, Volume 1 (Coffee Moon #1-4)

Pieta, a normal girl, leads a normal, uneventful life in a world of constant black rain. As the rain pours down, like it always does, she takes her usual route to school and has a pleasant conversation with her friend Danae. This is what every day is like for Pieta, and she takes a sort of everyday satisfaction from her totally normal life.

But then her typical, pleasant conversation with Danae... doesn’t happen.

“Why...?! Why can I remember... yesterday’s today?!!”