After the annihilation of the demon realm, Ezra, the 73rd demon king and survivor of the war between demons and humans, hides among humans and goes to Twilight Academy to experience what a 'normal' life is. However, he is put into the royal class, where the hero and a member of the imperial family are. Moreover, to pay the tuition of this academy for the elite, Ezra is in a lot of debt; and the weird things he learnt from the only human he has ever known don't help him have a normal life. 'Big sis told me that the best way I could make money was by gambling, so let's search for the nearest casino...' (Cover made with AI + ibisPaint X)