Additionally, Ryoo received permission from the Shucho Hosshinno (Cloistered Imperial Prince Shucho), the first Rinoji-no-Miya, to create a small island ("Kyodo Island") in the Shinobazu Pond.
さらに輪王寺宮初代の守澄法親王の許可を得て、不忍池に小島（「経堂島」）を築いた。