Juku Juku no Mi, One Piece Wiki

The Juku Juku no Mi is a Paramecia-type Devil Fruit which allows the user to mature and decay anything they touch. It was eaten by Shinobu. Juku comes from jukusuru (熟する?), which means "to mature" in Japanese. Its English name "Ripe" is another term for maturing. By simply touching an object, the user will cause it to rapidly age and decay. Using it on the ground will cause it to become a sinkhole, allowing the user to potentially avoid attacks by sinking into the ground. The fruit can also help

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