Scarlet eyes meet gold . . . That's about the only false note in the whole piece. Too redolent of the sapphire/amethyst/whatever orbs in so much badfic.
Also, just why does Chaos wish it had known Vincent better? Does it admire his calmness and strength? Or what?
. . . Vincent feels the power of their union flooding through him like sex and death and all the other great uncharted mysteries that the dark is home to. Vincent’s back arches as his body responds, taking what is offered in pure, unshadowed joy.
Mmmmmm. *purrs* What a stretch of prose that is! I could beg for you to expand here . . . but it is so beautifully perfect as it is. So terse, but it says so much.
With the one reservation, this is a beautiful little piece.