Deadly Duel! The Black Death Punch
In this episode, Shiryu challenges the Black Dragon, while Shun tries to save Seiya, who is slowly dying because of Black Pegasus' Black Death Horror. Shiryu, still weak because of his blood loss, almost sacrifices his life for friendship (which Black Dragon can't understand why, since he doesn't believe in such thing as friendship).
Aired 03/01/1987EP 11 - Deadly Duel! The Black Death Punch
1986
Saint Seiya: Knights of the Zodiac
Ages ago, the goddess Athena was served by fighters called Saints who channeled the power of the Cosmos within them. Now a youth named Seiya has trained to become a Saint himself by earning the mystical Cloth of Pegasus. He is joined by other Saints with Cloths of their own to fight for Athena.
(Source: Anime News Network)