I train at the pokemon league XD.
Once you've beaten the league and your able to beat it with a maximum of five pokemon, you can just give on an exp share and it will only take a few rounds. The victory road isn't a bad place to train either.
My first game was I think sonic adventure because the nextdoor nehbor kid Luigi loned it too me his brother's name is Mario his mom/dad has no obssesion
シーツー I can't help wondering are you familiar with Sonic and pals and even if you've never heard of it you seem way cool btw you can call me Sonic it's what everyone in the real world does