Summary

One Piece Monkey D. Luffy's Devil Fruit
Gum-Gum Fruit (Human-Human Fruit, Model: Nika)
Fan art

There're three versions:
Integrated type
Combined type
Pendant/Key chain type

(If you're using FDM to print the Integrated and Pendant type, remember to lie flat the model , so that the stem won't be too fragile.)

Support needed ( I use tree type support.)