Shuu practice the Nanto Seiken style. He is one of the six Nanto master.
He is blind because of when Kenshiro was a child, he fought and lost a battle against a practicer of Nanto Seiken. He was suppose to die but Shuu sacrifice his eyes to protect Kenshiro.
After the nuclear war, Shuu become the leader of an army who wanted to save the poor children from Souther. He lost against Kenshiro in a battle but Kenshiro didn't kill him because he was not bad. Shuu later attacked Souther but he was defeated by him. He died from a spear to the chest that had been thrown by Souther to kill him while he was holding the last part of Souther pyramid.
Shuu was avenged by Kenshiro who have then kill Souther.