Tiger Warrior: Attack of the Dragon King : Book 1 by Maisie Chan

Written by the winner of the 2022 Children's & YA Jhalak Prize. When Jack's grandpa gives him a magical jade coin, Jack finds himself caught in an ancient battle between good and evil. For he is the new Tiger Warrior, and it's up to him to save the world! Luckily, Jack has the spirits of the twelve animals of the Chinese Zodiac to help him.