What is an elf trainer?

Introduction: [Pokémon + Time Travel + Humanoid Pokémon + World Line Constriction + Parallel World] [If you don’t want to read about tactics and the like, you can jump. There are only a few chapters in total. There will be no more than ten chapters in the first hundred chapters, and then there will be no more. Basically not at all] Zhou Yuan found himself back to five years ago. He thought he was getting the Urban Dragon Aotian script, but his mother's words made him stunned, "When are you going to buy the initial elf egg?" He didn't expect that he got it. It was a dog at the beginning of the Elf World script, and all equipment relied on explosions (fog). As time went by, Zhou Yuan realized something was wrong. Isn't this the Elf World?Why is there no one-in-one enemy of mine?