I'm Really Not a Pokemon Incubus

After transmigrating to the world of Pokemon, Aisha finds himself saddled with a System of unknown function, and his Starter Pokémon is nothing but a Caterpie. What can a Caterpie even do?

Aisha: "Unless it evolves into Rayquaza..."

[ Ding! System mission issued: Ride a Rayquaza evolved from Caterpie and defeat the resurrected Groudon and Kyogre. Reward: Unlock the Rayquaza evolution route for Caterpie. ]

Aisha: "?"

From then on, his journey as a Trainer races off in an absurd direction.

The Dragon-type god-slayer Azumarill, who can beat up first-rate Legendary Pokemon. The world's strongest Charizard, bearing Arceus's Flame Plate. A Tyranitar that can compete with Primal Groudon for control of the weather...

With the System's help, Aisha himself seems to have become something extraordinary, too.

Reshiram: "Would you agree that the beauty of Aisha, the Hero of White, is unmatched?"

Zacian, the King of Swords: "If a Trainer can pick up a sword and take down Eternatus, what does he need me for?"

Hoopa: "Every Legendary Pokemon I summon defects to him the moment they see him. This kid is a Pokemon heartbreaker!"

And it seems Pokemon aren't the only ones he's charmed...