What is yamato devil fruit?

The Yamato Yamato no Mi is a currently unnamed Paramecia-type Devil Fruit that allows the user to transform themselves into a dragon, as well as granting them the ability to create flames. It was eaten by Yamato, the daughter of Kaido, one of the Four Emperors in the One Piece series.

The fruit's abilities have been shown to be highly destructive, with Yamato able to breathe fire and summon powerful dragon-like attacks. The exact limitations of the fruit's powers are not yet known, as it has only been recently introduced in the series.

As with all Devil Fruits in the One Piece world, the Yamato Yamato no Mi comes with the standard drawback of rendering the user unable to swim. If the user is submerged in water, they will be rendered immobile and unable to use their powers.