The Yomiuri Shimbun (issue dated April 20, 2026) carried an article titled:
“‘Kan’ei Gyoko,’ in which the Tokugawa invited the Emperor to Nijo Castle, marks its 400th anniversary—experts examine its significance. Cultural exchange beyond social rank gave rise to a new aesthetic sensibility.”
Please see the details below.
https://www.yomiuri.co.jp/local/hashtag-kyoto/20260420-GYO1T00101/