Aki is a Japanese restaurant near the Paris Opera and the Louvre Museum that serves katsudon, gyudon, and soba. It offers kimchi and pork okonomiyaki, and pours draft beer with Japanese-style foam. You can order katsudon, gyudon, curry katsu, and warm mori soba, and set menus are available. The set menus and rice bowls are large enough that you leave rice behind.