S1E19 : Sword of Solitude

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