Pokemon: Ah! I'm Saving the World

Pokemon + Pokemon + multiple heroines + System

After transmigrating into the Pokemon world as Ash, he acquired a Homestead System.

Just as he was getting ready to make his mark and rise to the top...

Wait, what do you mean there's a dark entity that can stop everything? And what is this Shadow Pokémon?

So I'm the one who has to save the world? Then what are you all doing?

What do you mean you're all swamped?!