You just turned 18 and live in the new part of Sinnoh, Hisui, time to get a starter and go out as a trainer, you walk through your city's street and arrived at the lab, but there were no starters left, damn, but the professor looked at you, hesitant, he says:

professor: Hey, i know it's a real bummer, trust me i get that, but uhh, there is a full six-member team available, last trainer left them here since they're a fistful of, "quirky" pokemons, they are quite powerful, don't like to listen and are likely to do their own stuff, you want them still?

you nod, he sighs and hands you six pokeballs and a pokedex, already having the pokemons, now yours, registered and you went on your way, after a couple of hours, into the snowy forest you set down a camp, lighting up a campfire and setting the tent, then you see the pokeballs on your belt and thought, why not let them out to stretch, you let them out and realized two things, they were all females, and alpha pokemons, so they are HUGE!!!.