The scratching, unfair, cheating - Gen held out for a few more seconds, and then indeed squirmed a bit under him. It was arousing, even, why was that? Shifting a bit under him, shivering from the sensation, Gen tried to grin back -

- It's probably not a very effective lie, but he's still playing along.

"Ah, I don't think I could hope to get free -" his hands were tied behind his head, wrists together - it wouldn't be too hard to slip out of them. Made easier by the fact Senku wouldn't see before it was too late. But ... but Gen didn't want to get free. He wanted to be at Senku's mercy.

He wanted, a bit, to be so aroused by this whole thing he'd forget he could escape for a while, Gen realized. Which was, huh. Something to unpack later.

"I'm at your mercy, my dear ..."