Waking up to a strange world while hearing a soft sound of piano was a strange way to see your after life. However for Rin, it was normal. She would often black out and enters that world she knew she had been gone to before. Until one time, she can't come back to the real world. Now trap between the war of the reverters and revertings, she has to defend the one she sided to and discover a great secret her past self forgot. "You are a...?" "I'm sorry. I don't know either."
4 parts