In the manga, he is an orphan who assumes the name William James Moriarty when he and his younger brother are adopted into the Moriarty family.
Sōma Saitō will voice protagonist William James Moriarty, who was adopted into the Moriarty family after he caught the eye of the Moriarty scion Albert.
Chiaki Kobayashi plays Louis James Moriarty, William’s biological younger brother.
The anime will premiere on Tokyo MX on October 11 at 10:30 p.m., and on BS11 and MBS on October 13.