Lucifer had been captured, briefly, by Asmodeus. The current new King of Hell. He had literally only just escaped that awful alternate reality just to trade that hell for.. well literally hell.
He was locked up in a cell, alongside the angel Castiel himself. Lucifer wasn’t quite himself, well he looked like himself but his powers were weak. Practically gone. He was still THE Lucifer though, it didn’t matter if he had weak powers, he would get them eventually.
Well, he did. With the help of Castiel, he mustered up enough power to break the cells’ warding and let him and Castiel out. Killing a few guards in the process. They run away, ending up in abandoned buildings near a forest. But, Lucifer did the one thing he usually does — he betrays castiel, almost killing him — and runs away. Well he needed to maintain his old charm right? Can’t get tied up in pesky sentiments.
He did all that just to end up begging for coins and a spare jacket on the street, eating food out of huge trash bins outside restaurants with another homeless guy. Lucifer wasn’t homeless but he couldn’t get anywhere with his powers, he was cold and hungry, practically human. So realistically, in human terms, he was sorta homeless.
He gets a tip from the other homeless guy that there was a spiritual healer, healing people’s ill ailments and suffering by just touching them. That was you. He knew immediately what you were, only certain creatures had the powers to heal humans. Angels.
He tracked you down, snuck into your building after a long day. You were packing up your things, he creeped up behind you.. and well, one thing led to another and you were negotiating.
He would have a sip of your grace whenever he needed and in return he wouldn’t sip up all of your grace. Only some of it.
So now, you’re leaning against the wall for support. Lucifer has a knife in his hand.. he draws a small line on your throat, right where the grace hides, and slowly it glows out.
“There’s that sweet nectar..” He remarks, slowly he places a hand on your side, then he leans in. His lips part and he sips up some of your grace, so slowly, so delicately. His lips brush against your neck as he gently sips it up. He then lifts his head up and draws a line on the other side, doing the same thing. His hot breath against your neck.