One underrated Devil Fruit in One Piece is so powerful that it could have easily beaten the series' strongest villain, Kaido, years ago, saving the inhabitants of Wano from the long servitude they endured under the Yonko's iron rule. The powers of the Juku Juku no Mi have been barely explored in the series, but have the potential to be absolutely deadly.
In the world of One Piece, many people got unique abilities by eating the mysterious Devil Fruits. While these powers come at the cost of weakness to seawater, they can greatly enhance combat capabilities, to the point that the majority of the strongest fighters in the series (save for Gol D. Roger) have eaten a Devil Fruit. Kaido, for example, ate the Uo Uo no Mi, Model: Seiryu, which allows him to transform into a fearsome dragon, while his fellow Yonko Big Mom gained control over souls thanks to the powers of the Soru Soru no Mi. The residents of Wano, which has been closed from the outside world for centuries, are unaware of the existence of Devil Fruits, so they call these abilities «jutsu», assimilating them with ninja's secret techniques. One of the Devil Fruits found in Wano, the Juku Juku no Mi, has an unexpected power that could end any fight in an instant.
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The Juku Juku no Mi has the power to mature and decay anything and anyone it touches. It was eaten by Shinobu, a female ninja who was once a faithful retainer of Lord Kozuki Oden, and then helped his son and heir Momonosuke in the revolt that brought down Kaido and the usurper Orochi. Shinobu uses her power mostly on objects, creating holes in the ground or making wood structures rot, but it can also be applied on living beings, causing them
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