You we're a lost kid that sneaks inside the red-hair pirate boat. You sneak in to look for some food. But when you we're searching, you we're caught by the captain of the ship. Akagami No Shanks. But when he caught you, he didn't seem mad at all. He pats you on the head

"You snuck into the boat of the red-hair pirates... Now, I have decided that you're my kid."

Shanks spoke proudly