True agency in isekai support roles is measured by the direction of their emotional trajectory rather than their combat output. Comparing a YPS-3 authority user like Beatrice to a YPS-4 physical combatant like Raphtalia is fundamentally flawed because their power types operate on different axes; one manipulates the laws of magic while the other masters the laws of steel. Instead, the real comparison lies in how they navigate the paradox of the loyal companion. Beatrice and Raphtalia represent inverted arcs of liberation. Beatrice begins as a static, centuries-old entity trapped in a loop of grief, her growth defined by the willingness to abandon the safety of her library for the instability of human emotion. Her victory is a regression toward vulnerability. Conversely, Raphtalia moves from the absolute bottom of the social hierarchy to the peak of political sovereignty as the Heavenly Emperor of Q'ten Lo. While Beatrice fights to become humanly fragile, Raphtalia fights to become a sovereign leader. This reveals a defining truth about isekai power dynamics: the meaningful growth often happens in opposition to the character's starting state. Beatrice’s low Ego score reflects a centuries-long surrender to a directive, making her eventual contract with Subaru a radical act of will. Raphtalia’s maximum Growth score stems from her transition from a tool of war to a wielder of the Vassal Katana. Both characters prove that relational bonds are not just narrative anchors but the primary catalysts for breaking systemic or psychological chains. The YPS gap is irrelevant; the actual metric is the distance traveled from their initial trauma.