Later on, in Punk Hazard, the birth of a Devil Fruit was witnessed for the first time with the Sara Sara no Mi, Model: Axolotl. Later on, in Marineford, fans saw Blackbeard steal the Devil Fruit of Whitebeard, and Oda established that the powers of these fruits can be transferred from one user to another. For instance, during the Enies Lobby arc, Oda revealed through the CP9 that no person could eat more than one Devil Fruit as the devil inside their body would not allow that, and the person would quite literally explode or cease to exist. As the story went on, more and more details about these fruits were revealed to the fans and, with time, Oda made sure to drop bits of information about how these fruits worked. The very first instance in which these fruits were introduced to the fans was when Luffy ate his Gum Gum Fruit in the very first chapter of the series. Ever since the beginning of the story, fans have wondered about the creation of these fruits and how exactly they came to be. Devil Fruits are very mysterious objects.
