Apparently he's alright with carrying on a conversation while someone is trying to concentrate, because he doesn't seem to mind that she works and writes as they do. Instead of seeming put off by her going above and beyond—even if he may not have deduced the full extent of it, tactics is an elective he's better off staying away from— he grins and leans back into his chair a little. Dedication is a thing he honestly admires in other people. Takes training too seriously could be Eren Jaeger's middle name if it wasn't so many unnecessary syllables.

"You'll like Armin," he says, and he seems utterly sure of that, despite the fact that she hasn't agreed to meet the cadet in question once he finally shows up. "He's always been real good at this sort of stuff."

Tactics. Armin had racked up high scores in SRPGs when they were kids, a talent that seems to have translated to real live battle simulations with (frankly frightening) ease.

"He ought to be around here soon—" Enthusiasm running a little faster than his common sense, he leans back until his chair is propped only on its two hind legs, which allows him to crane his neck for a better view of the door in the most casually reckless way possible. Something resembling common sense does catch up to him, though, because while he doesn't move from his perilously balanced position, he looks back over at her and says, "Hey, what's your name?"

He'd definitely seen her around before, but they haven't spoken before now. She usually seems to be keeping her head down.