Rean gets the hint, blushing a little, or maybe he's just red from how good Crow feels around him, mouth and ass both.

Either way he yanks on Crow's hair, fucking his throat harder, voice rough with desire as he gets close himself, but lets the lewd praises fall from his lips clearly, so Crow can hear.

"You so beautiful like this. You feel so hot and so good around me Crow, I can't get enough of of you. It's hard not to fuck you harder than this, see how much you can take of me. I love the way you look with your hands bound, mine and mine alone to do with as I wish."