1. In the cartoon One Piece, Lufei's birthday is May 5th. Author Eiichiro Oda hopes that by making Luffy's birthday Japanese Children's Day, every growing child will be encouraged to go forward bravely for his dream like Luffy.
2. "One Piece" tells the story of Luffy who went to sea for treasure and ventured all the way to become a generation of One Piece.