Wei Wuxian is intrigued and amused by that little demand. It's innocent enough, and yet he can't imagine the slightest reason anyone would make such a request. In all the years--centuries?--he's been in this place, no one has ever asked for that, and so he cannot dismiss it as some newcomer's eccentricity.

"Done," he agrees, dropping his hands to his side, one of them trailing the collar and leash. He lifts his chin, face available to be touched. Even if his captive intends to take the opportunity to claw out his eyes, he has the power to heal himself. Doing so will probably lengthen his short horns or sprout him a tail, but that's a manageable cost.