Another Possibility

"So… it was all a coincidence?" Alex asked.

"Destiny, maybe?" the man said before laughing a little. "No, I don't know if it was a coincidence. If it was, it is a hell of a coincidence. It could be that it grew thanks to your Life aura too, but I have doubts in that regard. Most likely, the Nine Yang Divine tree's roots threatened the existence of the World Tree, forcing it out of its shell."

"Maybe that was how it was supposed to grow in the first place," the man said, musing to himself. "Those gods should have just tried tossing the seed into hot magma and see what happened. Alas, they were too scared to hurt it and didn't dare. I can't blame them, I would've been the same."

Forced to mature in a harsh environment, was that what it was? Was that how a World Tree seed was supposed to find life? Somehow he didn't think that was correct.