One Piece is a famous Japanese manga series. Since its inception up to now, One Piece has been 17 years old, but the attraction of this series is still increasing. In 2008 alone, more than 260 million One Piece stories were sold, helping its boss reap huge profits. The story is about the adventures of Monkey D. Luffy, the head of the Straw Hat Pirates. They are trying to find the world's largest treasure to become Pirate King. This story has long been translated into many languages, including English and Vietnamese. You can also read online on the Internet without having to buy books.