He turns so they're both leaning against the metal wall of the room - he doesn't want to let go of Shang Beida, but he reluctantly lets go of him for the moment so he can let the other pull his shirt off. His hoodie is already in a pile on the ground, so it's fine.

Casper starts trying to untie his boyfriend's robes, but he's a little frustrated by them since he has no idea how they work. Slightly frustrated, he pulls his hands back and tucks his hands into his pockets. ... He's a little self-conscious about how he looks. "I'm not... uncomfortable, just... I don't think I look all that great? Not like you. You're gorgeous..."