Supernatural, Action, Josei, Fantasy, Drama, Mystery

Haru got involved in a traffic accident three years ago, with an amnesia case that made him lose a great part of his memories. He now lives with his legal guardian, the man that saved him, a mysterious man named Kiriyuu. After he finds a place that looks like a laboratory during a school trip, he ends up discovering that there might be more to the circumstances relating to his lost memories than what he initially thought.