yuuka Yuuka is Yuuki's sister. She is the one who has taken over the mysterious Deep Sleep. 5 10 Characters Ryuune Main Ryuune is Ryuunosukes big brother.... Ryuunosuke Main Ryuunosuke is Ryuunes little brother.... Yuuka Main Yuuka is Yuukis sister. She is the one who has overtaken the mysterious Deep Sleep.... Yuuki Main No biography written....
