"...does that mean it'd be bad?" That's all Ken can think, with a response like that. He's not the smartest at the best of times, and his brain's not exactly working up to par right now between pain and starvation - although at least with Chikusa's needles, some of the pain is fading. But Chikusa's evident alarm at the thought makes Ken feel like the answer to his question might be bad, and it doesn't occur to him that the very premise of the question might be the culprit instead.

"...I'm thirsty, byon." Somewhere in his talking, Ken suddenly became aware of his burning of his throat and the dryness of his tongue. He hasn't had nothing at all to drink since they started starving him, but it's been kept to a bare minimum on purpose.