This is based if my main OCs, Lucifer [black] and Storm Rose [grey].
Lucifer was the first to fall due to his stubborn personality. Storm Rose jumped herself to join her mate, sacrificing her rank to join the Archangel.
The Gold bleeding from Storm Rose is her wings as break and burn. The Red bleeding from Lucifer is his wings burning and breaking.
I also really liked the lineart.
CREDIT