Here be dragons

I'm in a nodescript house, sitting at the kitchen table with another girl and her mother. They're talking while prepping diner. I'm not really helping, mostly I listen to their chatter and the sound of cooking. The room is sunny, with long rays of lights cutting the walls.
The night falls, and we're in a park, under the streets lamps. There's a man with us, with short brown hair and a pâle, blandly handsome face. He's talking to the mother, very close to her. The girl is frightened, hiding behind me.
Her mother disappears and the street lamp over him goes out. He laughs and introduces himself as Lucifer. He moves for the girl, but I take her arms and run. We go from light to light, until I have enough and pull a knife. We turn around and the girl grabs the man.

Spoiler for don't fear the devil:

She pulls his head up and I slash his throat, again and again, the skinsplitting on the fleshe, bones and cartilages. The flesh is dark, almost purple, wiry and pulsing. I keep at it, the knife slipping easily through all, until I decapitate him. The girl keeps her hold on his hair as the body slumps foward. I grab his arm and start to drag it with us. The girl holds the head away from her body, looking disgusted. He's still speaking, trying to sweetalk us into reattach him.We end up at the top of a cliff, overlooking the ocean. The water are wild, full of foam. I tell the girl to throw the head first, so he can't see where his body land. She toss is hard enough for it to land almost on the face of the cliff on the other side. I drag the body and dump is once the head has disappear under the waves.