What do you mean? They were stuck in a loop?
I am assuming it means that the original Kim sunho was destined to be the original llyod, while the llyod that was replaced was supposed to be Kim sunho. Because their souls were in the wrong body it was destined for them to continously die and be reincrnated into eachother. I am assuming what broke the loop was the blue haired guy, forget his name, going into the other world and forcefully bringing Kim sunhos body to the other world, or llyod pushing the og Kim sunho to reincarnate, I don't really get it because the Kim sunho was in the body of Kim sunho after the og Lloyd was reincarnated, so idk. They don't give a stream of time it's weird. But I'm guessing the ending suggests they can all live on in their respective lives. But I think it hints at a paradox at the end of the manga of them both being the same soul. They are literally one just experiencing life and overlapping.
this manhwa did not deliberately explain that they broke the loop of them switching souls because they are in the right place now unlike in the novel but i love this so much