Maou (魔王) is a supporting character in Heroine? Saint? No, I’m an All-Works Maid (And Proud of It)!, voiced in Japanese by Shuugo Nakamura. The series' music includes "🌸Heroine? Saint? No, I’m an All-Works Maid ! Opening song with English subtitles", "🌸Heroine? Saint? No, I’m an All-Works Maid ! Ending song with English subtitles".
