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 Biblia Academy where he fatefully meets the Trinity Seven, female magic users who may hold the key to restoring the world.