Masamune was a senior councilor to [[Shimazu Tadatsune]]. He was assassinated on Tadatsune's orders on suspicion of treason.
+
Masamune was a senior councilor to [[Shimazu Tadatsune]]. Played a role in the [[invasion of Ryukyu]]. He was assassinated on Tadatsune's orders on suspicion of treason.
+
+
He is known in some records as 他魯済 (pinyin: ''Taluji''), a Chinese approximation of the pronunciation of Tarôsae, the middle part of his name.