Hi Peter. Wow. Very detailed and impressive article. I will have to take some time to assimiIate all the layers of information. For now a passing comment. Iwanami Shoten published Kokoro by Natsume Soseki but I saw many European movies at Iwanami Hall in Jimbocho in Tokyo without knowing its history.
I hope you will forgive a reference to Alan Bennett's irreverent definition of history
from the play and movie The History Boys.
And wow again. Thank you for sharing the depth and breadth of your knowlege.