Ore, Maou dakedo Baretenai yo ne?

From a lineage of elite demon lords, the current demon lord Eugene Satania Vidorick has one secret way of relaxing from the stress he accumulates in the demon world: to go to the human world under the guise as the human named Yuuji Sayano, mixing into common everyday folk to enjoy himself! Now a rookie-low-class demon named Mist suddenly appeared in front of him. With a good-for-nothing low-class demon at his side, Yuuji now has to hide his identity at all costs! Let's start this suspicious rom-com!

(Source: Ichijinsha, translated)