Elf: I've Become the Owner's Sister's Ever-Changing Monster!

Xu Xiujie traveled through a world where elves and humans coexisted, and became the owner of a down-and-out elf gym. He died of illness before he could fully demonstrate his ambitions, leaving behind a younger sister, Xu Xiuxue, to inherit the gym. Unexpectedly, Xu Xiujie would soon wake up and be reborn as his sister's versatile monster! Faced with countless trainers who treat his sister and the gym as soft persimmons. The gym was in danger of being delisted, but fortunately Xu Xiujie got the system! Turn on the system and gain enhanced transformer abilities. Any elves seen by Xu Xiujie can be perfectly copied by him. Since then, my sister's gym has become a nightmare for all trainers, and my sister's versatile monster can change into more and more forms. Three Holy Birds, Three Holy Beasts, Dialga, Phoenix, Mewtwo, Rayquaza... Until one day in the Global League, Xu Xiuxue took out the Variety Monster, and the Variety Monster just shook it and turned into an alpaca with 18 stone slabs! At that moment, people all over the world were shocked! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.