WEBCh I: AVA - Episode 1, Episode 1 of Ava's Demon in WEBTOON. *Updates Mondays and Thursdays * Ava's Demon is about a girl named Ava and the demon haunting her. The demon, however, might just be the ghost of an alien queen, Wrathia, seeking revenge on the one that destroyed her empire, a god-like figure named Titan.