Because I can't find the English menu on the Rikyu official website, and I don't understand Japanese, I can only guess what the food my friend and I ordered. I ordered the "ultimate" beef tongue set and my friend has the new one, the "imoni" set. Imoni is a type of taro and meat soup eaten traditionally in the autumn in the Tōhoku region of Japan.
For me, the ultimate beef tongue set is better. Because the beef tongue is thicker and more yummy. It's fantastic good. And also, it's a very good choice to have rice as the first meal in Japan. Because the Japanese rice is more tasty than Taiwan, I don't know why. Because of this, the curry of this set is kind of bad idea. It's good but too strong for the taste. It may cover the original flavor of the rice. Just try it, but don't eat the rice with curry only.