ONA · 12 episodes · 23 min/ep · Encourage Films
Millennium Research Institute, a counseling office where bizarre requests come in. The head of the research institute, Ichirou Umoregi, also known as "Akuma-kun," a genius boy who only appears once in 10,000 years. However, he doesn't know his real family. So Akuma-kun, along with his partner Mephisto III, pursue the mystery of his origin while challenging mysterious cases in this mysterious detective buddy story. (Source: Fandom)
Shingo Umoregi
Supporting
Yuuko Iguchi
Japanese
Hyakume
Supporting
Rie Hikisaka
Japanese
Koumori Neko
Supporting
Keiichi Nanba
Japanese
Yuko
Supporting
Kumiko Nishihara
Japanese
Kaju
Supporting
Masato Hirano
Japanese
Mephisto 2-sei
Supporting
Toshio Furukawa
Japanese
Mephisto III
Main
Toshio Furukawa
Japanese
Sanae Kazama
Supporting
Ryouko Shiraishi
Japanese
Mio Kazama
Supporting
Yumiri Hanamori
Japanese
Etsuko Umoregi
Supporting
Michiyo Yanagisawa
Japanese
Hina Asanagi
Supporting
Yukiyo Fujii
Japanese
Satan
Supporting
Yuusaku Yara
Japanese
Hiroshi Oonogi
Series Composition
Hiroshi Oonogi
Script (eps 1, 2, 5, 8, 10-12)
Junichi Satou
Chief Director
Shigeru Mizuki
Original Creator
Kunio Tsujita
Color Design
Fumitoshi Oizaki
Director
Fumitoshi Oizaki
Original Character Design
Fumitoshi Oizaki
Key Animation (eps 1-12)
Akio Izutsu
Music
Sakae Shibuya
Character Design
