[Eiji couldn't hide the fact that his face lightened up at the mention of efficiency, smiling a little in amusement. It was a perk, for sure, but he was more tickled hearing Emi talk that way - like he was trying to speak Eiji's language to appeal to him. It was hardly necessary, but maybe that was why it was kind of funny.

It did relax him, though. Enough that when he glanced away again, it was less anxious and more to the tune of being bashful.]

That's true... [He sucked in a sharp breath through his nose, before slowly letting it out. Don't get distracted - focus on the goal, Eiji.]

This'll be a good experiment. We can see how differently it acts.