Spock is impressed. Jim is in the perfect headspace, already. He'd thought it would have taken a bit longer, honestly. But here he is, kneeling before him, looking utterly perfect. Spock reaches out and rewards him with a stroke against his cheek. But. No, that wasn't a reward, was it? Jim had made that clear. He liked the pain. He liked the loss of control. And if Spock really wanted to reward him, that was where this had to go.

His hand trailed down, fitting neatly over Jim's throat and squeezing just enough that a deep breath would be impossible. Just a tease of what was to come.

"Tell me about the day, on the bridge," he demands. "When I had you pinned to the console with one hand. Strangling you until your eyes teared. Until you could feel your lungs burn and your pulse race." He's smirking, which is not what he normally does, telling this story. "Tell me what happened, afterwards."