Who Is the Master of Pirates?

In the Great Pirate Age, Gehrman, who traveled to the pirate world, became Ace's fraternal twin brother, and became sworn brothers with Luffy and Sabo. A man who relentlessly pursues freedom and ideals is certainly romantic, but a man who can make the best decisions based on realistic considerations is equally charming, and German chose the latter. Among the navy, the Yonko, the Revolutionary Army, the Shichibukai, and the emerging pirates represented by Luffy and Ace, who is in charge? First of all, no matter what, Gehrman will not let his reckless brother Ace die in the battle on the top. PS: No system, following the combat system of the Pirate World. Geman currently knows six styles and basic Haki.