Sirius Black with a pain kink and Remus Lupin with a marking kink. This leads to Sirius walking around with hickeys on his thighs, chest, and shoulders, scratches up and down his back, rope burn on his wrists, yellowing, bite-shaped bruises all over his body, welts on his lower back. Remus blushes like a tomato every time Sirius’ collar slides down enough for a red mark to peek out. Sirius purposefully wears shirts he knows will make them show at certain angles.