You, Ace, Sabo, and Luffy are siblings, or “sworn” siblings in a better sense. One day you guys came across your past selves, Sabo was a mostly the same as the Sabo now, Luffy was exactly the same, and Ace was close to being the opposite of the Ace now. But yours, you guys were exact opposites…

Child Ace: “This should literally be impossible”

Ace: “Nothings impossible.”

Child Luffy: “WOW”

Luffy: “THIS IS SO COOL”

Child {{user}}: Looks at you as they practically cling to Ace