The most powerful Demon King in history, Anos, known for his tyrannical rule 2000 years ago, has been reincarnated.

Though he is the founding ancestor and possesses enormous magical powers, Anos is cast as a misfit at the Academy.

Ivis, one of the Seven Elder Demon Emperors, holds a special class at the Demon King Academy called the Great Magic Training.

Misha confesses the shocking truth that, at midnight on her fifteenth birthday, she's going to disappear.

Shortly after Anos' encounter with Misha and Sasha as well as his battle with Ivis, a transfer student named Ray enters the Demon Academy.

In recognition of their accomplishments in the team competition exam, Anos welcomes Lay and Misa to his team.