The Misfit of Demon King Academy: History's Strongest Demon King Reincarnates and Goes to School with His Descendants

is a Japanese light novel series written by Shuu, with illustrations by Yoshinori Shizuma. The series began publication on March 10, 2018 by ASCII Media Works under their Dengeki Bunko publishing imprint.

Synopsis
Anos, the Demon King of Tyranny, has defeated humans, spirits, and gods alike. But even demon kings get tired of all the fighting sometimes! Hoping for a more peaceful life, Anos decides to reincarnate himself. When he wakes two thousand years later, though, he finds the world has become too peaceful--his descendants have grown weak and magic is in serious decline. Intending to reclaim his rightful place, he enrolls in Demon King Academy, where he finds that his magical power is off the charts. Literally. And because they can't measure his power, the faculty and other students regard Anos as a misfit. With the support of Misha, the one student he manages to befriend, the misfit (Demon King) begins his climb up the demon ranks!

Anime
An anime adaptation of the light novel aired for 13 episodes between July 4, 2020 and September 26, 2020