Guest Stars Yamato Kinjo as Takeshi Goutokuji Harumi Shihou as Archimedel Dai Goto as Daichi Isuzu Mitsutoshi Shundô voices Kekera Fuku Suzuki as Ziin Kitamura Ryo as Niram Shigenori Yamazaki as Chirami Atsumi Ishihara as Riku's Mother Rina Onuki as Sae Ganaha Risa Mori as Mami Otawara Kinnosuke Oikawa as Riku