Pirate's Fire Fist Ace

Introduction: An otaku in the 21st century accidentally travels to the world of great pirates, and is reborn as the owner of Burning Fruit, Portgas D. Ace. When he learns that he will die in the top war in a few years, he decides to join the navy. From the most ordinary sailor, step by step to grow into the most advanced combat power of the navy... This time, I will use my own flame to burn this era - Portgas D. Ace