Duo tried to mutter something about not being called 'sir', but he shook his head and moved on, not bothering to push the matter. At least for the time being. If it came up again, then he'd just gently remind the good doctor that he was...well, he wasn't old enough to be called 'Sir'.

He watched as Herbert scribbled on the notebook, and offered a shrug when he spoke.

"This place doesn't make a lick of sense to me, to be fair. And I'm currently living it. Talk about culture-shock." With that, Duo looked down at his state of dress and chuckled. "It's hard for me to imagine a life that doesn't involve the colonies. Would you believe I was...around fifteen before I even touched real grass for the first time?"