One Piece: Bringing Down Marine Headquarters from the Start

Yudian transmigrates into the world of Pirate King by accident and activates the Attribute System! By consuming Devil Fruits, he can gain a certain number of free attribute points! The beginner's reward for activating the Attribute System gives him a whopping 1,000 free attribute points! “Armament Haki, Observation Haki, Conqueror's Haki, martial arts, swordsmanship... There are so many attributes that spreading the points around would have limited effects. I might as well put them all into the strongest attribute!” Yudian pondered this carefully. In the end, he chose to put all his points into Armament Haki! Then his unleashed Armament Haki collapsed the Marine Headquarters base...