Fist of the North Star
The Star of Darkness Engulfs the Heavens! Time Evolves Beyond the Deathmatch!
S3 E2:
Shu is a blind man who wields one of the South Star Six Sacred Fists; while in battle with him, Kenshiro realizes that Shu's fist holds no intent to kill; Shu was testing Kenshiro, to see if he could defeat Souther.