This game has two heroines with two different sides of the Black Route and the White Route.
White Route – Airi, a normal high school girl, encounters a man known as a black rabbit, Rain. Suddenly, he takes her into a world called the Black World and told she must become queen of this said world.
Black Route – A sudden coup d’état takes place in the black world where, Luna, rules as the queen. Her two aides, Rain and Snow, decide to take her to the White world while a new queen is taken to the Black World.