In the vast universe, an inestimable number of events were taking place at any given moment. Separated by vast amounts of space, and sometimes even realms, any number of seemingly ordinary and completely unrelated events sometimes brought about strange and seemingly impossible results.
A number of people, some oracles, some mystics, some sorcerers, some cultivators, some who could pry the secrets of the foundations of the universe, and some who just happened to have unusual dreams, occasionally could see glimpses of the results before they happened, without understanding the process or cause. These people often claimed these visions as prophecies, or, often, an undeniable destiny.
The truth of destiny was a secret hidden within the machinations of the universe, if there even was a truth to be found. The only thing that could be determined, however, is that in the entire universe, there were very few places cut off from the influence of destiny.
For those that forgot, Remy Lavern was first mentioned in chapter 147, and then the relating plot was furthered in chapters 192 - 193. You can go and read again to recall everything that happened.