The narrative utility of a character often inversely correlates with their raw output. There is a massive structural divide between a YPS-3 combatant and a YPS-6 entity, a gap that renders traditional combat comparisons irrelevant. However, this disparity highlights a core isekai truth: the struggle for competence is more compelling than the management of omnipotence. While Milim Nava exists as a cosmic constant whose primary conflict is emotional stagnation, Eris Boreas Greyrat defines herself through the agony of inadequacy. Milim’s arc is one of regression from a lonely god to a socialized ally, but her power is a given, a static background element. In contrast, Eris’s decision to abandon her domestic stability to train in the Holy Land of Swords transforms her from a reactive child into an autonomous warrior. This journey represents a genuine evolution of identity that a planet-level entity cannot replicate. Milim navigates the void of immortality, but Eris navigates the void of her own perceived weakness. The weight of Eris’s Growth DNA stems from the fact that her status was not granted by birth or system error, but carved out through physical suffering and discipline. Consequently, the YPS-3 warrior offers a richer character study because her existence is a choice, whereas the YPS-6 entity is a circumstance of nature.