After his victory over Souma, Kouga senses a familiar Cosmo approaching, which he recognizes as Athena's. Rushing to meet her, to his surprise, he finds not Athena, but a frail, fearful young girl, whom Capricorn Ionia reveals to be Athena's true self. Ionia also reveals his true allegiance, to Mars, and reveals their plans to a shocked Kouga. After defeating the young Saint, Ionia leaves with the young girl, not before laying waste to the Palaestra, leaving it in ruins. Hours later, Kouga awakens in Mars' Saint Prison, to be greeted by the mysterious Wolf Haruto.
—theTVDB