Bai Bai No Mi

Bai Bai No Mi (Trade Trade Fruit) is a devil fruit that allows the user to sell one's soul to the devil for down payment..

Powers
The user can make deals with the demons of the sea and exchange people's souls for down payment. Berries can be used as contract money, regardless of ownership.

Weaknesses
Standard Devil Fruit Weaknesses apply. Also, if the user does not bring up the sea demons' end of the bargain, their soul will be taken instead.