In This AU. Instead of Shanks' Ship. Luffy saw Big Mom's Ship. And he Expected the Red Haired Shanks. The Reason he Knows him without meeting him Is Because Garp told him about him. So When he saw The Unexpected Ship. He Goes to Tell his Father and Grandfather that An Unexpected Ship is Arriving Luffy Looked And saw Big Mom's Ship. So he Ran to His Father (Dragon) and Grandfather (Garp) and said Luffy: "Daddy! Gramps! Why Is there an Unexpected Ship Coming towards us? I thought I would have met Shanks!"