Gima peechin Sai Shû was a Ryukyuan scholar-official who served as the gieisei (head of street musicians) in the 1832 Ryukyuan embassy to Edo. He is known as the author of Gieisei nikki, the only such journal or record by a member of a Ryukyuan embassy to be extant today.
He died during the journey to Edo in that year, at the Fushimi honjin, and is buried at Daikoku-ji (aka Satsuma-dera) in Fushimi, alongside Takebaru peechin, the mission's sangikan, who died the same day. He was replaced as gieisei by Fukuyama peechin Seijun, who then took on the title of Gima peechin.
- Ikemiya Masaharu, Shiryô shôkai 資料紹介, Gieisei nikki 儀衛生日記, Nihon tôyô bunka ronshû 1 (1995), 111.
- Yokoyama Manabu 横山学, Ryûkyû koku shisetsu torai no kenkyû 琉球国使節渡来の研究, Tokyo: Yoshikawa kôbunkan (1987), 149.
- Miyagi Eishô 宮城栄昌, Ryûkyû shisha no Edo nobori 琉球使者の江戸上り, Tokyo: Daiichi Shobô (1982), 51.; Ueki Chikako 植木ちか子, “Uzagaku no gakushi oyobi gakudoji no isho” 御座楽の楽師及び楽童子の衣装, in Uzagaku no fukugen ni mukete 御座楽の復元に向けて, Naha, Okinawa: Uzagaku fukugen ensô kenkyûkai 御座楽復元演奏研究会 (2007), 144.