True agency in isekai is rarely about the scale of one's magic, but about the resolution of chronological trauma. Comparing Beatrice and Rudeus is a cross-type exercise; one wields an Authority and the other utilizes Physical magic, rendering the gap between YPS-3 and YPS-4 a secondary detail. The real friction lies in how they process the weight of their previous existences. Rudeus views his first life as a stain to be scrubbed clean through earnest living, transforming his growth into a project of additive redemption. He builds a legacy to overwrite a void. Beatrice, conversely, exists as a living monument to a frozen moment, her entire identity anchored to a singular, failed promise. Her struggle is not about building a new life, but about the violent act of abandoning a dead one. While Rudeus fights to be worthy of the world, Beatrice fights to admit she is allowed to exist within it. This reveals a fundamental divide in the genre: power can be a tool for reconstruction, as seen in Rudeus’s domestic stability, or a cage of preservation, as seen in Beatrice’s library. Rudeus’s high Bonds score reflects a successful integration into society, whereas Beatrice’s development hinges on a single, codependent bond with Subaru that breaks her centuries of stagnation. Ultimately, Rudeus represents the hope of a second chance, while Beatrice represents the agony of the first one lasting too long.