Antō served as a member of Sanshikan during Shō Gen and Shō Ei's reign. He was dispatched as congratulatory envoy to Ming China together with Sai Chōki (蔡 朝器) to celebrate the investiture of Crown Prince Zhu Yijun (later Wanli Emperor) in 1569.[3]
Disappearance
In 1579, Chinese envoys would come to Ryukyu to install Shō Ei as the new king. But Ryukyu was suffering from famine in this year. Antō was sent to China to ask for postponement, but his ship was caught in a storm and disappeared in the sea and was never seen again.[1]