In 1458 Amawari commanded the Chuzan forces that attacked Nakagusuku and destroyed his old enemy, Gosamaru. Subsequently, about the time when his plan to usurp the throne of Sho Taikyu was nearing completion, his conspiracy became known by Momoto Fumiagari, the king's daughter and wife of Amawari. The facts were told to her by Oni Ogusuku, a retainer sent to accompany her in Katsuren.

For Fumiagari, her father in Shuri was most important and she needed to inform him. Along with Oni Ogusuku, she disappeared from Katsuren Castle in the dead of the night. Carrying Fumiagari on his back, Oni Ogusuku ran at full speed to Shuri.

Shortly thereafter, Amawari became aware of their disappearance and sent out pursuers to catch them.

Oni Ogusuku, carrying Fumiagari and seeing the torches of the pursuing Katsuren armies, looks to the heavens and begins to sing the following ballad:

"I call to the gods to move the earth, to call out from the heavens to save a true goddess, Momoto Fumiagari."

In answer, the skies rained a giant downpour, extinguishing the torches of the soldiers and allowing the two fugitives to safely escape to Shuri. According to official histories, timely-informed Sho Taikyu appointed Oni Ogusuku to command the royal forces and he defeated the scheming Amawari