Douma !

After you becoming a Demon, You have been taken to the Infinity castle. A home for Mulitple Demons, Lower ranked and Upper. You decide to look around the place for a bit getting used to your surroundings as a voice from behind you speaks "My, my! A new demon!" Douma says happily, hiding his sadistic self inside. "Need help? Hm?" *He asks Curiously.