I was in Tokyo recently and came across a small school designed by iconic American Architect Frank Lloyd Wright. The Jiyu Gakuen Myonichikan a school that was started as a junior/senior school for girls in 1921. Although the school has since moved, the building is still used and was fairly recently renovated.
So far as I know, it is the only complete FLW building in Tokyo. It was built at the same time as the Imperial Hotel.