Dragon Ball: Successor's Reborn

This is a Dragon Ball story long after the events of Dragon Ball Super in the Age 923, where peace had seemed to have been kept for a very long time. Even Planet Vegeta had been wished back by an unknown entity, back in Age 893. However, the planet was suddenly destroyed by someone, forcing a single saiyan to escape to a different planet in order to survive: Earth. That Saiyan was Nai, who was only 14. When she got to Earth, she was taught how to go about living by another Saiyan named Rimitto and two humans named Mike and Jade. After countless battles over the years, it seemed Nai and Rimitto could finally be at peace for a change, when suddenly, a mysterious fighter appears, and changes everything...