Before Luffy became famous for his extraordinary adventures on the Thousand Sunny, his brother Ace had already established a significant reputation across the seas of One Piece. One of the primary reasons for this fame was his fierce battles, including one against a member of the Seven Warlords of the Sea. Unfortunately, this conflict has rarely been witnessed by others, making it a hidden gem in the lore.

However, the details surrounding Ace’s adventures after his departure from Binh Minh Island have been briefly mentioned in the anime and manga. Notably, deeper insights into these events are explored in Sho Hinata’s novel “The Story of Ace.” In the past, Ace had an intense five-day battle with Jinbe, during which neither side yielded until both were nearly exhausted.
Furthermore, Chapter 1100 of the One Piece manga hints at how he maintained the balance of power in the world of pirates. It appears that Ace’s fight with Jinbe was not the only significant battle he engaged in with the Seven Warlords of the Sea.
This narrative shifts focus to the implications of Ace defeating one of the Seven Warlords, leading to Kuma being appointed to this position. Ace’s victory before becoming an infamous member of the Warlords is an intriguing secret within the One Piece universe. It suggests a large-scale battle that those who are uninitiated may never witness.
Ace’s defeat of the Seven Warlords of the Sea caused substantial changes in the One Piece world. The Warlords are considered powerful pirate captains, utilized by the World Government to maintain peace and balance among the three dominant pirate factions on the seas.

After Ace’s victory, Kuma assumed this role, becoming a pivotal figure in maintaining the World Government’s image before the public and the other Warlords. This decision holds profound significance, highlighting Kuma’s crucial role in the rescue of Luffy and the Thousand Sunny in Sabaody Archipelago.
Kuma’s induction into the Warlords was a domino effect, leading to the eventual confrontation between him and Luffy on Thriller Bark and the later rescue of the Thousand Sunny. This series of events could be traced back to Ace’s battle, significantly impacting Luffy’s journey and the subsequent narrative.
Although Ace has passed away, his actions continue to resonate within the world of One Piece, paving the way for Luffy to become the Pirate King. Even after his demise, Ace’s legacy within the One Piece universe remains impactful.