Heroine: Natsukawa Aine The actual identity of the ghost body is unknown
Male Protagonist: Koike Takuya. An ordinary student in the school accidentally encountered the ghost form of Aine one day. He did not know that Aine was a ghost.
Girl 2: The heroine's human state is a ghost state before being kissed by her beloved.
Girl 3: Kitakami Miri, Takuya's neighbor and childhood sweetheart, started to have a crush on Takuya in kindergarten.
Male 2: Amano Sho and Koike Takuya's half-brother