Xu Liang accidentally transmigrated into the Naruto world and bound himself to the Pokémon Entrustment System.

After that, the world began to change...

Naruto: Hokage? Forget that — I’m going to become a Pokémon Master!

Sasuke: Itachi, I’ll defeat you with my Pokémon and make you realize how foolish you were back then!

Pain: Only by finding the Legendary Beasts can true peace be restored to the world!

Obito: Rin, wait for me. I’ll find Ho-Oh and bring you back to life!

Madara: I hereby acknowledge you… as the strongest Pokémon Master!

Sage of Six Paths: What the heck… I take one nap and the whole world’s changed?!