One Piece
After 10 years, Luffy is 17 years old and he had trained a large amount. He leaves his town, Foosha Village to begin his journey to become the king of pirates. But soon, he met with a disaster, then he met Koby. Koby's dream is to be a marine, but unfortunately he is forced to stay on Alvida's crew. Alvida is a pirate. Koby is unable to defeat or escape Alvida. However, after learning of the situation, Luffy defeats Alvida and helps Koby, and sails to Shells Town with him.