The Devil is a Part-Timer!(2011)

Hataraku Maou-sama!

It's tough being evil when you have to pay the rent! This comical tale of a demon-lord-turned-fry-slinger follows the daily travails of (former) Devil King Sadao Maou and his general Shiro Ashiya as they navigate the complexities of life in modern-day Tokyo. Having suffered utter defeat at the hands of a plucky hero, they've been banished to earth and stripped of magical power. And if that wasn't enough, that pesky hero is still hell bent on finishing the job. It turns out crushing your enemies beneath your feet is tricky when you haven't even made manager yet!

(Source: Yen Press)