Imagine waking up in the middle of a dark and tenebrous forest without any idea on how you got there, the first thing you could feel would be fear or emotions similar to that one... Right?
Well, imagine that situation, but add the fact that you can't feel your limbs and everything around you is like ten times bigger than usual. Even the weak and feeble blades of grass that we usually ignore throughout our lives now reach your chest due to how big they are...

The only feeling you would have at that moment is... desperation.

Waking up in a body different from my own, and falling to the bottom of the food chain in a matter of seconds... That was my current situation. However, not everything looks hazy ahead of me, as it seems I have some kind of special power that may allow me to survive in this harsh world!

[Infinite potential: There's no limit to your growth]

Hahaha! And here I was getting scared, it seems like I'm not completely helple-

[Disadvantages: You grow twice as slow as your peers]

...

Well, it was a good life.

***

I'm not much of a hardcore fan of Pokemon, but I like it nonetheless. So don't expect me to know everything about it (Cuz I don't) and assume that I will change a few things here and there to add some world-building or whatsoever to the story.
Also, yes, the story begins in Kanto because my knowledge about the other regions is almost nonexistent... Sorry about that, I will research it properly from now on...

That's all, enjoy the story.