Luffy's mastery over Gear 4 allows him to use it in specific body ... The series can be read by the fans officially and for free on the Shonen Jump and the Manga Plus app. The release date for ...

The Shōnen Jump universe ... and utilize Haki, Luffy achieved a fusion of his Haki abilities and long-standing rubber-based powers. This transformation, called Gear 4, allows him to create ...