Stories of the Japanese 01439 [First Sho Dynasty] The Gosamaru-Amawari Rebellion: Slander

Sho Taikyu, who ascended to the throne after the major conflict known as the Shiro-Furi Rebellion, had to restore the waning authority of the royal government. To do this, he sought to build kinship ties with influential Aji (local lords).
Before his ascension, Sho Taikyu was known as the "Goeku Prince" and governed Goeku (Okinawa City, Okinawa Prefecture). Goeku was not far from Zakimi Castle, where Gosamaru resided, and through that connection, he took Gosamaru's daughter as his principal wife, with whom he had three sons and one daughter.
After his ascension, Sho Taikyu married off his eldest daughter, Momoto Fumiyagari, to Amawari. In other words, Sho Taikyu likely wanted to solidify his regime by having:
・Nakagusuku Aji Gosamaru as his wife's father
・Katsuren Aji Amawari as his daughter's husband
Furthermore, when sending Momoto Fumiyagari off to be married, Sho Taikyu dispatched Oni-Ufugusuku (?-1469), a close aide from his time in Goeku, as her attendant. Oni-Ufugusuku was originally born into the family of the lord of Kyan Castle (Uruma City, Okinawa Prefecture), but he lost his father at a young age and became a person who served the Goeku Prince, Sho Taikyu.
However, this alliance collapsed. In the second year of the Tianshun era (1458), Amawari accused Sho Taikyu, saying,
"Gosamaru is preparing for rebellion."
This was the beginning of the "Gosamaru-Amawari Rebellion."
According to the "Chuzan Seifu" (Kyuyo), the official history of the Ryukyu Kingdom, Amawari was "a person with talent but no virtue, and was greedy," and had long been thinking of killing the king to seize the country. It is said that because Gosamaru saw through his plot, Amawari decided to dispose of the troublesome Gosamaru before starting his rebellion by spreading groundless slander.
Sho Taikyu was shocked and sent spies to Nakagusuku. Upon seeing the heavily armed soldiers inside Nakagusuku, these spies reported,
"There is no doubt that they are preparing for a rebellion."
Thus, an army to subjugate Gosamaru was dispatched. The commander of the subjugation army was Amawari.
Seeing the royal army attacking, Gosamaru did not resist at all and took his own life with dignity. Amawari had succeeded in easily disposing of his greatest obstacle, Gosamaru, and his next target was the King, Sho Taikyu, at Shuri Castle.
However, Amawari's conspiracy was exposed. Oni-Ufugusuku overheard Amawari consulting with his retainers about a preemptive strike on Shuri Castle.