"Let's go on a journey to unlock the world's secrets." Kimihiko Kimizuka was once the assistant to two Ace Detectives, and after achieving a miracle, the sequel to the story was ordinary life. The Ritual of Sacred Return was supposed to be the moment world peace was achieved--but instead, it was discovered that something was wrong with the memories of the world. As the search for the truth begins, it seems Kimihiko's memories of his brief but extraordinary adventure with another Tuner, Rill, may hold the key...