Pokemon: The End of the Journey, Where the Dream Begins

Ash, champion of the Masters Eight, is reborn at the age of ten with maxed-out tactical knowledge and the [Pokémon Master System], returning to where it all began.

This time, he won't take any wrong turns.

From the start, he tames a tsundere Pikachu, uses a Caterpie to crush Onix at Pewter Gym, rescues an abandoned Charmander on Mt. Moon, and steamrolls the Gyms, fine-tunes his team, and makes up for every regret.

The end is also a beginning.