The grand overarching narrative hinge of Saint Seiya Omega centers on two colossal deceptions. In Season 1, Mars is revealed not to be an omnipotent cosmic architect, but an insecure former mortal warrior named Ludwig, thoroughly manipulated by his sorceress wife Medea. Furthermore, the true existential threat is Abzu, the god of primordial darkness, whose lingering essence infected baby Kouga during the initial Sanctuary invasion. Kouga's ultimate battle requires him to be completely possessed by Abzu before breaking free through the collective hopes of his friends and the light of the deceased Aria, purging the ancient darkness once and for all.
Season 2 escalates with an even bolder revelation: the clumsy, glory-seeking Steel Saint Subaru, who travels alongside Kouga, is none other than Saturn, the supreme deity of time. Saturn deliberately sealed his memories to walk among mortals and evaluate whether humanity deserved existence. Upon awakening, Saturn freezes worldwide time and nearly crushes the Saints. However, the cumulative resonance of 'Omega Cosmo' achieved by the Bronze Saints leaves an indelible scar on his armor and his divine mind. Realizing that his mortal experiences as Subaru gifted him genuine bonds of friendship, Saturn concedes the fight, leaves Earth in humanity's hands, and withdraws to eternity, allowing Kouga and his friends to live free of divine reign.