Ace's death has left a lasting mark on the history of One Piece and Luffy's life, but fans seem to believe one important lesson by Shanks could have saved him.

Luffy has made many friends over the years in One Piece, but these are the most important relationships he's formed over the course of the show.

it is revealed that Luffy and Ace had a third brother named Sabo. Born to noble parents, Sabo rejected the corrupt nature of the noble class of One Piece and dreamed of setting sail as a pirate.

One Piece might be filled with tragic backstories, but Mayumi Tanaka's emotional performance of Luffy's grief when Ace died ...

Sabo's existence in One Piece is revealed during Marineford ... Oda shares a hypothetical scenario where Sabo saves Ace at Marineford, but it's considered a dream by Luffy and Sabo.

Ace and Luffy. However, his journey was sadly cut short, before it even had a chance to begin properly. Due to this, many One Piece fans have wondered what Sabo would have been like if he had the ...

a pirate who was locked away on Level 6 of Impel Down but escaped during Luffy's invasion to save Ace, in order to lure Hancock to him and use her as a hostage against the World Government due to ...

This was also a key moment as Luffy was happy to put his trust in Sabo to fight for Ace's devil fruit in his place. In one of the most affecting chapters of One Piece history, Sanji appeared to ...

The sibling relationship between Luffy, Sabo, and Ace ends up giving the characterization of the One Piece protagonist a bit more substance and context to his journey in the series. It also serves ...

Clearly, a huge battle is looming ahead on Elbaf, and One Piece already has the perfect opponent for Luffy. Surprisingly enough, it isn’t Loki but one of the newly introduced Holy Knights ...

To celebrate One Piece anime's return ... Luffy, Portgas D. Ace, and Sabo. The Luffy illustration has been drawn by Black Clover mangaka Yuki Tabata. Needless to say, the artwork has turned ...

Luffy has had his fair share of outfit changes throughout One Piece history, meaning that there are plenty more options for Anane to try out should he be looking to recreate other Straw Hat ...