America pauses in his hammering for a second. Oops, that's possible that Shouichi isn't from his time! He had been so concerned about England and Prussia from being in the past that he forgot anyone else could be from any moment in time too! He quickly puts together what he remembers of Shouichi. The kid had talked about some pretty modern stuff so it wasn't like he was from the stone age or anything. America decides he can relax about it.

"Heh, believe it or not, I'm from the beginning of the 21st century! Don't let these duds fool ya!" He thumbs at his vest. "We don't have crazy-big robots like this other guy has in his time, but technology grows pretty fast! What about you, Shou?" He starts hammering on the next nail.