The Misfit of Demon King Academy: History's Strongest Demon King Reincarnates and Goes to School with His Descendants, (魔王学院の不適合者 ～史上最強の魔王の始祖、転生して子孫たちの学校へ通う～) also known simply as The Misfit of Demon King Academy (魔王学院の不適合者) or Demon King Academy, (魔王学院) is a Japanese light novel series written by Shu and illustrated by Yoshinori Shizuma. The series originally began as a web novel in April 2017 on the user-generated novel publishing website Shōsetsuka ni Narō when it was later acquired by ASCII Media Works, which published it from March 2018 to August 2025. A manga adaptation by Kayaharuka was serialized online from July 2018 to July 2021, when it ended due to the author's death. An anime television series adaptation produced by Silver Link aired from July to September 2020. A second season aired from January 2023 to July 2024.
Plot
After years of countless wars and strife, the demon king Anos Voldigoad made a deal with the human hero, Kanon, to sacrifice his own life to ensure peace could flourish. Reincarnating 2,000 years later, Anos finds that royal demons now harshly rule over lower class hybrid demons in a society that values Anos's pureblood descendants over the demons who interbred with other species, such as humans and spirits. He runs into several issues such as demons and their magic being extremely weak due to the peace he created, and a false demon king known as Avos Dilhevia ruling, with his own name forgotten. He seeks to unravel the mysteries behind this false king, dealing with foes, old friends, and the biggest problem: graduating from the Demon King Academy, where he is labeled a total misfit.