We went to Akabeko last week, partly because my wife loves these kind of places, largely because it was just up the street from the apartment we were staying in.
Will write something longer later, but since it was a holiday we had the 5 course menu rather than the 3 course lunch I’d been planning, and after the fact was glad of the “forced choice”.
I wanted all along not to love it, but much as Charles say above, everything was damn good, and while it’s not quite at the level of “must return first chance I get”, we will definitely return and I do recommend it to anyone interested in these kind of French-by-a-Japanese-chef places.
It’s not equal to Alliance, but I daresay it was better than any other similar place we’ve dined the last few years, with more small innovations / Japanese twists than the typical one.