Ryosei Konishi, Mika Hijii, Ray Fujita, Yasue Sato, Hironobu Kageyama, and Yukijirō Hotaru reprise their roles from the original television series. Shouma Yamamoto reprises his role from the Beast of the Midnight Sun special. Mary Matsuyama and Masahiro Kuranuki reprise their roles from the Red Requiem film. Newcomers to the series include Ozuno Nakamura and Yuriko Hishimi.