SMILE Factory

The SMILE Factory is a hidden facility situated near the secret underground trade port of Dressrosa. As the name of the location implies, the factory produces the artificial Devil Fruits known as SMILEs.

Appearance and Layout
The factory is a circular building with a domed roof. The inside of the factory contains machines and large tanks for processing and storing SAD, and takes the appearance of a large garden/greenhouse. There are trees and bushes growing the SMILE fruits, as well as a river with bridges for people to cross. At the top of the dome roof is a collection of luminescent sunflowers, known as Elegant Sunflower (エレガントサンフラワー) pointing downward towards the trees. Rotten fish are placed in an area with the sign "Meal" near it, indicating poor feeding standards for the dwarves. The sunflowers appear to come from the Flower Field, as they share the same pattern.

The facility is situated underneath the Corrida Colosseum, and next to the Officer Tower, the hub of Dressrosa's underground trade port.

Production Procedure
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, the essential substance used for the process that only Caesar Clown could produce, is poured into the river. The river has irrigation on both sides that channel the river under the trees to feed them.

Once the fruits have grown, the dwarves harvest them. 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.

Past
Eight years before the Battle of Marineford, when Doflamingo returned to Dressrosa and usurped the throne from Riku Dold III, he captured 500 dwarves and forced them into slave labor to produce SMILEs in the factory. Their usefulness in producing these fruits stems from their extensive knowledge of plants, their impressive strength for their size, and their naive nature which makes them easy to deceive.

Dressrosa Arc
When the Straw Hat Pirates first arrived on Dressrosa, they split into three groups. The group consisting of Luffy, Zoro, Franky and Kin'emon had the goal of finding and destroying the SMILE factory, as well as rescuing Kanjuro.

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