SMILE Factory

The Smile Factory is a hidden factory that lies near the secret underground trade port of Dressrosa. The factory produces the artificial devil fruits known as SMILES.

Appearance
From the outside the factory is a circular building with a dome shaped roof. The inside of the factory contains machines for processing and storing SAD. There are trees and bushes growing the SMILE fruits, the trees are surrounded by a river, the river has walking bridges for people to cross. Whether the river is water, SAD or a mixture of both is to be confirmed. At the top of the dome roof is a collection of luminescent sunflowers pointing downward towards the trees.

Factory Method
The factory demonstrates for the first time, how devil fruits can actually grow before they are consumed and constantly reborn into new fruits, though they are just artificial devil fruits and not natural ones.

The SMILE fruits grow from the trees within the factory. The luminescent sunflowers at the top of the factory provide light to the trees. SAD is poured into the river, the river has holes on both sides that channel the river under the trees to feed them. Whether or not the river is water, SAD or a mixture of both is to be confirmed.

Once the fruits have grown, the dwarves harvest them and put them on a trolley kart. Even though the Tontatta dwarves excel at plant growing, they still have trouble growing the fruits as they are highly unnatural. Only one-tenth of the fruits from the crop are usable.

History
When the Straw Hats first arrived on Dressrosa, they split into three groups, the group consisting of Luffy, Zoro, Sanji, Franky and Kinemon had the goal of finding and destroying the SMILE factory as well as rescuing the samurai.