Ken makes a pained, huffy noise and immediately tries to twist away from the punishment. This doesn't involve nearly as much pulling away from Chikusa as one might think it would.

It's while Ken is rubbing his ear that Chikusa speaks, and Ken eyes him. "You usually stop when you're with me, byon," Ken points out. This is a fact he'd learned long ago, and has used to his advantage. "When I touch you."