Arata Kasuga is the Magic King of the Superbia archive and main protagonist of the series, possessing the ability to nullify and copy magic. After a Breakdown Phenomenon destroys his hometown and causes his cousin Hijiri to disappear, Arata becomes determined to save her by becoming a Magus and transferring to the Royal Bibilia Academy where he fatefully meets the Trinity Seven. He usually speaks in somewhat a perverted manner and is calm in dealing with adversity. He is often referred to as the "Magic King Candidate" because only those of Magic King class mages are able to create worlds, but actually, the world he created was merely a wish that he made with the grimoire to return the world the way it was. His thema is Impel (支配インペル, Control).