Luckily for Klaus, James is so worked up that he needs very little prompting to do what Klaus wordlessly asks him to. Actually, the drugs and the rapidly building arousal only serve to loosen his restraint, and the moment his hand is on Klaus's neck, he wraps his fingers tight around it, nails digging into flesh as he squeezes his throat tight enough that practically no air will make it through.

"Hah, fuck," he grunts and snaps his hips harder, all but shoving Klaus against the wall as he fucks him faster and rougher, so close to his own orgasm. His hand on Klaus's throat stays tight, and will stay tight probably until they both come, holding him in place too while they arch and grind frantically against each other.