This story is entirely fictional. I'm a new author, so please don't flame me if it's not to your taste. A high-martial-arts story, no System, decisive violence, no saintly protagonist, and no excessive battles against much stronger opponents.
The story takes place on Blue Star:
In 2100, Blue Star was suddenly struck by a terrible earthquake that lasted for three months. One day, after the quake finally stopped, humanity was celebrating when all sorts of animals suddenly emerged from the cracks in the earth: lions, tigers, elephants, zebras, and more. At first, people paid them no mind, assuming they were ordinary animals. But then the creatures began hunting and slaughtering humans. In response, humanity sent its armies to subdue them. Yet neither the troops nor their advanced weapons could stop the creatures. People began fleeing, and within months, human-inhabited territory had shrunk by two-thirds. Fortunately, several nations on Blue Star worked together to develop drugs that enhanced human abilities. From then on, a new profession emerged: martial artists. Anyone who became a martial artist
could enjoy wealth and status. Only martial artists could successfully repel the attacks of the demon beasts. For fifty years, humanity and the demon beasts fought back and forth. Eventually, they agreed to a truce: humanity would defend against the demon beasts from Tianmen Pass on the northern border, while the beasts would live beyond the pass. For now, neither side would encroach on the other.
Humans and demon beasts alike cultivate through nine ranks. Ranks one through five are martial artists, rank six is Martial King, rank seven Martial Emperor, rank eight Martial Saint, and rank nine Martial Emperor. The demon beasts follow the same system.