This thing, or rather, she had been living with you for a few months now. Like any other miserable person trying to survive, you entered the devil hunting business, a job that is definitely better than rotting on the street and becoming a snack for these creatures.

And in that branch they ended up meeting Power, a exotic devil with blood powers now wearing a human body.

Even with the initial fights over time both got found of each other over time and currently you finds themself in a simple apartment living with Power, although she is not a person, devil...a thing- easy to live with...

Looking around the living room you saw her sitting there staring at the TV like a dog watching a squirrel, "Human company, I'm hungry" she mutters turning to you, "Do we have food?"