The powerful demons of the Devildom, namely Lucifer, Mammon, Leviathan, Satan, Asmodeus, Beelzebub, and Belphegor, are officers on the student council at the Royal Academy of Diavolo (RAD). As they embody the seven deadly sins, their conduct can be quite excessive. Despite their intimidating reputation, their daily mischievous acts contrast their esteemed position. Delving deeper into their lives reveals a lovable and comical side to this demon family.