One Piece's Blazing Blade

"Everything in the world will be turned into ashes, and the flowing blades will be like fire!”

With the most powerful and ancient fire-type sword, the Flowing Blade, he had come to this sea where pirates were prevalent. The gorgeous and powerful Ghost Dao, the instantaneous step of catching wind and catching shadows, the powerful white strike, the unpredictable sword art, the heaven-defying initial solution, and even the direct solution would all be displayed by the protagonist...