If you take a bite, you will acquire a mysterious ability. How it grows and how it is harvested is shrouded in mystery, but those who eat it gain supernatural powers and are called "ables". Those with abilities will be feared by the general public as having extraordinary abilities. On the other hand, because of its formidable effect, the fruit can be traded at a price not less than 100 million berries per piece.
The power obtained from the Devil Fruit varies depending on the fruit eaten, and no fruit with the same ability will appear at the same time. In addition, it is not possible to create more than one person with abilities from a single fruit.
And the most frightening thing of all is the effect that can be called a side effect, which attacks the person with the ability in exchange for powerful power. Making a deal with a sea demon poses a great risk to those with abilities.
The incarnation of the sea devil, the one who eats the devil fruit, is hated by the sea from that moment on. Without exception, when people with abilities enter the sea, they lose their strength and cannot even move. Moreover, not only the sea, but also rivers, lakes, and even baths can cause the same symptoms in "places where water accumulates".
The other is that you can't eat more than two types of Devil Fruits. It is said that the moment the second fruit is eaten, the body of the person with the ability will be shattered by the curse of the demon.
Because of this danger, there have been cases where Tenryujin have fed slaves for fun.
The effect of the devil fruit is not limited to humans, but also gives power to those who ingest it, whether it is animals or inorganic substances, without exception. Dr. Vegapunk, a naval scientist who noticed this, has developed a number of technologies that apply the power of the devil fruit through his own research.
The first is the technology to feed on inorganic substances. The details are unknown, but so far it has been confirmed that there are guns and swords that have been transformed by eating animal-based devil fruits. The other is a technology that applies the ability of the "shiny fruit" of the Admiral Yellow Monkey to weapons. This is achieved in the form of a laser mounted on the Pacifista.
And Vegapunk is also conducting research on "artificial devil fruits" ...
A species that exhibits a wide variety of abilities, such as stretching its body like rubber, turning its entire body into a blade, becoming transparent, and causing earthquakes with shock waves. There are many capable people who demonstrate their abilities while retaining their original form. It is this superhuman system that has various abilities that do not apply to animal or natural systems, and it has the highest number of confirmed numbers among the three species.
A species that can be transformed into an animal. Capable individuals can transform into a "humanoid", a "beast-form", and a "beast-humanoid" in between. Of the three species, it is the only one in which the physical abilities of the abled person themselves change. Some of them are rare, such as "ancient species" and "phantom beast species", and only five species with flying abilities have been confirmed at present.
A rare species that can transform the body of a person with abilities into a natural object or natural phenomenon itself, and can manipulate it at will. It is said to be the strongest of the three species because it transforms the body itself, boasts tremendous defense against physical attacks, and has a wide attack range like a natural phenomenon. The only effective countermeasure to this species, apart from individual weaknesses, is the "Armament Spirit".