Urotsukidōji: Legend of the Overfiend is a Japanese dark fantasy erotic horror manga series written and illustrated by Toshio Maeda.

Toshio Maeda is an erotic manga artist who was prolific in the 1980s and '90s. Several of Maeda's works have been used as a basis for original video animations (OVA) including La Blue Girl, Adventure Kid, Demon Beast Invasion, Demon Warrior Koji and his most notorious work, Urotsukidōji. An interviewer commented that Urotsukidōji "firmly placed him in the history books—in Japan and abroad—as the pioneer of the genre known as hentai, or "perverted".