Keian 3 (1650) - Genroku 4 (1691). Fifth generation of Omotesenke. He was born to Hisada Sori and Kure, the daughter of Genpaku Sotan, and succeeded as Iemoto after being adopted by the fourth generation Koshin Sosa. Each generation of Omotesenke Iemoto uses the name Sosa (宗左), but Zuiryusai used the characters 宗佐 to write Sosa, because he was an adopted son. He left one tea memorandum, Zuiryusai Nobegami no Sho.