Also known as: Yamazaki Shuusen

A Confucian Scholar who served the Uesugi Clan by invitation of Uesugi Kenshin, also an administrator under of the Shogunate. He taught the Nine Confucian Classics and other works of Chinese sages in the Uesugi Clan and also served in the role of communicator/negotiator with commanders both within and outside of the Uesugi Clan.

He supported Uesugi Kagekatsu in the Otate no Ran after Kenshin's death. After the war, he opposed the conference of honors upon those Yasuda Akimoto had lured to Kagekatsu's side with promise of reward and pressured Kagekatsu against it. He was killed by one of these commanders, Mouri Hidehiro. His death ended his line.