What i like to think is that joyboy’s body was born naturally with the properties of rubber, and that he was born a sun god. Since we know now that devil fruits are the embodiment of humans wanting to evolve in certain ways, maybe upon joyboy’s death people really wanted him to come back because of all the good that he had done, thus the formation of the hito hito model nika. The government however did not want joyboy’s return and hid the fruit, and shanks had wanted to go and give the fruit to his captain’s son, ace. But instead, the fruit found it’s way to luffy because luffy was born as the one to be sun god nika.
1. Charlos, no cap 2. Akainu 3. Trebol 4. Teach 5. Spandam 6. Foxy 7. Orochi 8. Sterry 9. Wapol 10. Squard and yall should stop hating on Arlong asf. he is a good antagonist to Cocoyashi and he wasnt really evil even if it killed bell-mere and slaved nami, but we can consider the fact he is so overhated even if it wasnt worst than others like akainu and spandam, and actually is one of the mugiwara-supporting crews in op world.
Actually at 19 y/o At gear 5 the description says that is an evolution ore the gomu gomu no mi fruit.he actually user another fruit called sungod nika fruit
100% Shanks found the fruit and intentionally placed it close to Luffy so he would eat it. Shanks knows a lot more than everyone on One Piece, hell im willing to bet that he wants Luffy to defeat Imu and bring down the World Gov. corruption