Nine-Tailed Fox

This is a world where beasts are king. Human beings sign a master-servant contract with their pet beasts through spiritual covenant stones, and use mental suppression in exchange for absolute obedience. The purity of the bloodline determines the upper limit, and the rating standards are uniformly formulated by the Beast Masters Association. Su Chen had no interest in this set of rules. On the first day of time travel, he picked up a three-tailed fox cub classified as an "F-grade useless species" in the corner of the trading market.