One Piece has been around for more than two decades, and it is still going strong. One Piece has become the most popular anime and manga series of all time because fans love the characters and story. Monkey D. Luffy is the main character, and fans want to see him achieve his dream of becoming the new Pirate King. Luffy is known for his straightforward and fearless personality. He is a kind and selfless person, which is why he has been able to make so many friends.