What's wrong with Devil Fruits being born from the desire of the person who created it? It actually goes hand in hand with haki being the manifestation of a person's willpower. Those with strong willpower would have strong desires, which in turn would create abilities based on those desires. Perfect explanation for something like Asura.
What explanation do you think would be better suited, because remember, for years now the most popular theory the fandom loved to throw around was that there was a magical tree that spit out fruits with random powers.
What explanation do you think would be better suited, because remember, for years now the most popular theory the fandom loved to throw around was that there was a magical tree that spit out fruits with random powers.