The demon king got tired of destroying, killing and causing misery and dreams of a peaceful life. He gets reincarnated 2000 years later and has to witness that his descendants have become weak and used to peace, their wonderful magic had declined. So he applies to the Demon King Academy, which is said to gather and educate those who are considered reincarnations of demon kings, but they dismiss his power and don’t accept them into the Academy. On top of that, they say the legendary demon king is a completely different person! While everybody despises and dismisses him only Misha, one of his relatives, becomes his follower and the declined person (demon king) starts to rise once again in the demonic hierarchy!