I recommend the book Elves: Ambush Hunters at the Beginning. The main character was called Li Mingzhi. After waking up, he transmigrated to the world of Pokemon and became a little wimp. He had obtained the EXP Exchange System, and through leveling up, he could obtain EXP to exchange for medicines, items, and so on. Key words: Pokémon, Trainer, Elf. The main character in this novel has a younger sister, but there is no mention of whether the pet's quality can be improved through the system. However, this novel is a Pokemon novel, so I recommend it to you. I hope you like this fairy's recommendation. Muah ~😗