Arai Hakuseki
In 1714, he accompanied royal princes Yonagusuku and Kin in the , the seat of Japan's Tokugawa shogunate. While there, he met with a number of the top Confucian scholars in Tokugawa Japan, including Arai Hakuseki, chief advisor to the shōgun, who is known to have had a particular interest in the exotic Ryūkyū Kingdom, Ogyū Sorai, and Sōrai's student Dazai Shundai. As a result of this meeting, Hakuseki would go on to write a in 1719; Shundai would likewise include comments about the Ryūkyū Kingdom and its relationship to Satsuma han in his works.