Who Is in Charge of the Ups and Downs in This Turbulent World?

I came from the future, but due to time travel, I was involved in the turmoil of the three realms. Humans, demons, beasts, monsters, and gods fight against each other. Amid the strife, I worked hard to become stronger and dominate the three realms. Just to maintain the order of the universe, karma and injustice can be redressed! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.