Haruka Yoshimura as Kouko Kaminaga

ED Performed the ED for Riddle Story of Devil Riddle Story of Devil Also scored Riddle Story of Devil Ayaka Suwa as Tokaku Azuma Also scored Riddle Story of Devil Hisako Kanemoto Also scored Riddle Story of Devil Manami Numakura Also scored Riddle Story of Devil Fumiko Uchimura as Haruki Sagae Also scored Riddle Story of Devil Sachika Misawa Also scored Riddle Story of Devil Chika Anzai Also scored Riddle Story of Devil Yuka Ootsubo Also scored Riddle Story of Devil Azumi Asakura as Isuke Inukai Also scored Riddle Story of Devil Miho Arakawa as Sumireko Hanabusa Also scored Riddle Story of Devil Yoshino Nanjou Also scored Riddle Story of Devil Maaya Uchida