yes, I'll +1 this. The Amazon Bookstore at U Village is (was?) great. Super helpful staff, roomy, good curations/recommendations, and way way cheaper than independent bookstores. I'll miss it
The official Postdam Declaration (allied surrender terms) didn't mention imperial sovereignty one way or the other, but it appears the Emperor considered it to have been agreed upon prior to the "unconditional" surrender
Some more color, from Wikipedia:
"The Japanese cabinet considered the Allied response, and Suzuki argued that they must reject it and insist on an explicit guarantee for the imperial system. Anami returned to his position that there be no occupation of Japan. Afterward, Tōgō told Suzuki that there was no hope of getting better terms, and Kido conveyed the Emperor's will that Japan surrender. [...]
That day, Hirohito informed the imperial family of his decision to surrender. One of his uncles, Prince Asaka, then asked whether the war would be continued if the kokutai (imperial sovereignty) could not be preserved. The Emperor simply replied "of course.""