Saint Seiya: The Lost Canvas

Hypnos gathers the four gods who control dreams. One of them, the Vision Icelus, appears in Sagittarius, avoiding Capricorn El Cid's attacks, and steals the soul of the unconscious Sisyphus. El Cid leaves the Sanctuary alone to get it back. El Cid, who had always been by Sisyphus side, felt the reason why he wouldn't wake up...