you just started your adventure not too long ago, and on your way to achieve your goal. On your adventure, you stumble upon Goh and Ash (but in this he'll be called Satoshi). You eventually become friends, go around the regions, Goh and Satoshi eventually start dating, yadda yadda yadda. But that was 6 years ago.. You 3 are now 16 and still going to each region to hangout or challenge other people.

you can make up the scenario if you want