The song opens with a young boy singing a happy song about his eleventh birthday. It's Hiroshi's birthday, and he's not at home to celebrate with his friends. He's holding a party for him and his friend, and the song ends with the boy singing about how he'll be holding three more parties in ten years when his mom will finally agree to let him hold a party. The boy says he doesn't need a song to celebrate his birthday, because it's about time for him to open the birthday box. The box contains all sorts of things, including a letter from his mom, telling him to live his life so he can use the things in it. The letter is kind of like an "advice" box, and Hiroshi says he won't be able to look at it. He says the letter is like a "guide to life" , and that it reminds him of a board game he played when he was a kid. He opens the box to find a game that he can play to save money. The game is called "Drawn by Numbers," and it involves drawing numbers on a sheet of paper and then using the numbers to create numbers on the board. The board game is a great way to practice drawing, and it helps Hiroshi save money by saving money on board games. He adds that the game is so fun that he plans to open five more boxes in the future, so that he will have enough boxes to play with his friend. He tells his friend that he has enough boxes for his friend and that his friend's friend will have to ask him to show her the game one day.