Henry would've been content to simply converse with the kid like this, where he'd just draw or mind his own business while the kid talked, but the 'sir' added at the end has him looking over with an arched eyebrow. He's not used to the title, but he can't say he hates it either. He'd be glad to know that he didn't look over before he'd called him sir, though. Being saluted would've been Just as strange.

Also he has weird name. Like a robot or something.

"I'm Henry," he says, biting back the 'just Henry' that lingers on his tongue. "That's your name?"

He looks at him now, taking in the strange details of this... YorHa unit.