Good Friends! Come To Be With Athena
Eventually, Athena Saori is revived. The light from the Athena’s Sheild reaches to her. The Gold Saint of Libra, the mentor of Dragon Shiryu tells the truth to the other Gold Saints what happened 13 years ago, and that Saori is the reincarnetion of Athena. Saori moves to the Athena’s Shrine from the foot of the Sanctuary through the 12 rooms of the Gold Saints, saving other Bronze Saints, Shiryu, Hyoga and Shun by the miracle power of Cosmo. In Athena’s Shrine, Seiya is about to death, beaten by Saga of Gemini, Seiya helped by Ikki. And other friends, Shiryu, Hyoga and Shun. Suddenly, the Gold Cloth of Gemini is removed automatically against Saga’s intention. Finallly, Saga killed himself by sticking the Athena’s Rod. His personality of good regrets his sin. Thus, the battle comes to one end. The evil is disappeared from the Sanctuary. Source: crunchyroll
Aired 16/04/1988EP 73 - Good Friends! Come To Be With Athena

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)