Urotsukidōji was created by Toshio Maeda, in 1986, and was a huge departure from his earlier works in that it mixed erotica with humor, and the supernatural. He was commissioned to do the series for Manga Erotopia, a pornographic manga magazine published by Wani Magazine that deals mostly with avant garde stories. Maeda was picked because of his artistic style which paid incredible attention to detail and for his ability to tell rather good stories with complex plots, unlike most erotic manga artists at the time. From: http://en.wikipedia.org/wiki/Urotsukid%C5%8Dji