Lucifer, Mammon, Leviathan, Satan, Asmodeus, Beelzebub, and Belphegor are brothers and rank among the most powerful demons in the Devildom. They serve as officers on the student council at the Royal Academy of Diavolo (RAD). However, as avatars of the seven deadly sins, their behavior often leans toward the extreme. Their daily antics mask their high status and fearsome reputations among their peers. When seen behind the scenes, the members of this family appear more lovable—and laughable—than they first seem!