I went a couple of years a go. Queued for at least an hour in. The restaurant is so small and they don't make people share tables. In the end my curry was burnt, small and expensive. One of my worst food memories.
Sorry for the late reply but I think that they only accept reservations via facebook from Japanese customers . I actually gave the contact of one of my friends in Japan instead of my own information. (+ I wrote to them in Japanese). They must've thought I was Japanese haha. Maybe next time you should try that instead.
Starting with soup, there will be six creative dishes made using wagyu, followed by hand-rolled sushi, shabu-shabu, steak, rice（ramen）, and dessert.
All the portions are rather small, but there are quite a number of dishes.