Shō Nei
Shō Nei was forced to swear a number of oaths during his time in Kagoshima, as he and his kingdom were formally made vassals to the Shimazu clan. The so-called Fifteen Injunctions (掟十五ヶ条, "Okite jūgo-ka-jō") were among the most major, and primarily involved political and diplomatic matters. These stated, among other stipulations, that Ryukyu would not engage in trade or diplomatic relations with foreign states without the consent of Satsuma. These policies, along with maritime restrictions and other stipulations, would govern Ryukyu's domestic situation and foreign relations for over 250 years.