Chef Fumi Takeuchi trained at Shimbashi Shimizu, and I have heard excellent things about her shop from a very reliable source. Yet I don't think I've ever seen this restaurant discussed on CH (granted, she's only been open for 2.5 years).
Has anyone here been to this shop, and if so, could you please comment on your experience? Has Ninisix been?
This is high up on my list to try next visit, and if the sushi is anything like Shimizu's (which I've heard that it is), it should be quite a treat.