the kid here is saying a lot of stuff that's easy to understand, but I went down a bit of a rabbit hole with his last sentence: Moi aussi, quand je serai grand, je veux aller les voir en vrai ! Moi aussi - easy, "me too" quand je serai grand - the "serai" threw me for a loop, but I had a hunch that it was a future form of être and I was right, so this is "once I grow up", literally "when I am big/great" :) je veux - I want to aller les voir en vrai - I'm still not 100% sure what the "les" is doing there, but he's basically saying he wants to go and see all of it for real. (the sights of Kalos, that is)