When Luffy was around 6 or 7 years old, the Red Hair Pirates led by Shanks stationed themselves in Foosha Village Inspired by Shanks, Luffy stabbed himself under his left eye with a knife to prove his toughness. During this time, he accidentally ate the Gomu Gomu no Mi (rubber Devil Fruit) that Shanks had locked in a chest, stripping away his ability to swim When mountain bandits threatened Luffy, Shanks saved him from a Sea King (the Lord of the Coast), losing his left arm in the process Before leaving the village, Shanks gave Luffy his iconic straw hat, making him promise to return it one day after Luffy becomes a great pirate king
