Demonology 101 (sometimes abbreviated as D101) is a webcomic written and drawn by Faith Erin Hicks from August 1999 to June 2004. It tells the story of Raven, a 16-year-old demon being raised by a human in ordinary human society. Hicks' first public work gained attention as an early story-focused webcomic, and ran for 700 pages before being concluded. Source: Wikipedia (en)