The Misfit of Demon King Academy, Vol. 4, Act 2 (light novel)

The truth is out the fraudulent Demon King, Avos Dilhevia, is a great spirit. And with his legendary power, he seizes control of Dilhade. In order to learn the secret of the great spirit s birth and stop Avos once and for all, Anos must go back in time to Aharthern two thousand years ago. There, he witnesses a loving family torn apart by a tragedy that will explain everything... Every injustice, every tragedy will fall before the Demon King of Tyranny! The misfit s path to domination continues as the Great Spirit Arc reaches its emotional climax!