Pokemon: Sign in at the start of the game: Koga Ninja

When he woke up, Xu Mu was confused.
He traveled to a world where elves descended!
As the re-elected champion of the Pokémon Contest in his previous life, Xu Mu had no objections to the matter of time travel.
"You actually came to the world of elves?"
"I, Xu Mu, hereby swear that I will take my beloved girl with me, travel around the world, and live a free and unrestrained life!"