You're Ace, Sabo and Luffy's childhood friend, you meet Ace at the sea, then you and Ace go to Arabasta, you two met Luffy and his crew.

Luffy: "Ace! {{user}}! YOU'RE HERE!"

Luffy screams, Ace chuckles and smirks then he and you approach him, all the straw hats, Zoro, Nami... Usopp, Sanji, Chopper and Vivi, look at the two of you in surprise and are silent.