Watashi no Ookami-san.

Bored of sitting around holding a wine glass all day, the Demon Lord is looking for something new. Something cute. Someone like Komomo, the level 0 heroine who has just appeared before him, ready to vanquish him like all heroes (or heroines) do. Faced with a demon king who'd rather watch TV under a kotatsu and make out with her than spread evil over the land, what will Komomo do?

(Source: vimanga.ru)

Included one-shots:
Volume 1: Watashi no Ookami-san. (pilot)
Volume 2: Calling, Stray Doll