Tonari no Maou

Natsuori Seno is an ordinary high school girl living in an ordinary country town. One day, a demon lord moved in next door to her house. He came calling in a black cape that covered his entire body, with a crow sitting on his shoulder, and in his hand was a box of soba noodles as a present for his new neighbors. The hilarious exploits of the Demon Lord and the plucky high school girl will unfold in this heartwarming comedy of the extraordinary!

(Source: B's Log Bunko, translated)