Demon King Daimao(2010)

Ichiban Ushiro no Daimaou

After enrolling at the Constant Magic Academy, Akuto Sai discovers he's not just a gifted student with magical powers; he's destined to become the Demon King. And though he's not that crazy about the idea, it drives the girls wild! From the sexy school girls in his class to the skin-obsessed android who's programmed to seduce him, Akuto has no shortage of wacky girl trouble. How much temptation can a demon king take?

(Source: Sentai Filmworks)