Gear 5 is powerful, but Luffy needs to master Supreme King Haki to defeat stronger enemies. Supreme King Haki can't be trained directly; Luffy needs to grow stronger to improve it. Luffy must ...

Luffy has come from nothing, and is now one of the most feared individuals in the world. In Wano, Luffy awakened to the true form of his Devil Fruit, and it was revealed that his guru isn’t the ...