Pokémon: Blackened Gardevoir in the Beginning

Reborn in a world connected with elves, Yang Fan became a gym leader who was about to inherit the gym. But because the original elf was an extremely weak and timid Larulas, he was about to be kicked out of the gym as he was about to undergo an audit. At this critical moment, obtain the elf development system. "Because your Larulus blamed himself for being too weak, he decided to mutate into darkness and take the initiative to evolve into Chirulian!" Everyone discovered that the dilapidated gymnasium of the past had stood at the apex of the two worlds for some time, and there were even traces of mythical beasts hidden in the gym from time to time...