[Awww, the kid looks really upset. Ed wavers a bit and he puts his hand comfortingly on the top of Rin's head, like he does to Winry when it looks like she might cry.]

Me neither, but it's just a town. You can think of this as being on an adventure, right? You can explore and see new things, and it might even be a lot of fun.

[He gives him a bright, encouraging grin.]