Shō Kinpuku succeeded his nephew, Shō Shitatsu, in 1449. A one-kilometer-long dam, which known as Chōkō Dam (長虹堤, Chōkōtei), was built in 1451 by Kaiki, a somewhat mysterious figure from MingChina. The dam was built from Naha harbor to Tomari harbor, connecting many tiny isles.
King Shō Kinpuku died in 1453, a succession dispute erupted between the king's son Shiro (志魯) and his younger brother Furi (布里). Shuri Castle was burned down in the conflict, and both of them died in the incident. After the incident, the king's other younger brother, Shō Taikyū, came to the throne.