Vengeance is Tastless

(A REWRITE) "Remember, Samuel; demons are evil, vile creatures, never to be trusted. The sinners of Hell." "I know, but perhaps I want to choose the sinner. Selfish, yes. But, even when I pay for my mistake, and the world crumbles, even when I fall, I'll be dragging him down with me." (M/M pairing, F/M pairing)