Kugi Kugi no Mi

Name: Nail Fruit (Kugi Kugi no mi)
Type: Paramecia
Subtype: Produces

Base Power: The Nail Fruit turns the user into a Nailing Human able to produce nails from their body which fasten objects together. The nailing process doesn't directly inflict wounds or pain but simply fastens objects together.

Rookie Devil Fruit: +25 meter range allows the user to be 25 meters from their produced nails, but the nails only last for the posting round they are created.
Junior Devil Fruit: +1 post Duration allows the user's produced nails to last one posting round longer for a total of 2 posting rounds.
Journeyman Devil Fruit: +25 meter range allows the user to be 50 meters from their produced nails.
Expert Devil Fruit: +1 post Duration allows the user's produced nails to last a total of 3 posting rounds.
Master Devil Fruit: +1 post Duration allows the user's produced nails to last a total of 4 posting rounds.

Weaknesses: Aside from standard Devil Fruit weaknesses, produced nails rust and break when exposed to a drop or more of seawater, and are able to be removed using brute force. The nailing process is as strong as the rank of the move used, so strength one rank higher than the nailing process removes a nail after one post while strength two ranks higher removes a nail instantly.