The illusion of loyalty masks a fundamental divide between psychological evolution and programmed obedience. While both characters share a Growth score of 80, these numbers describe entirely different trajectories. Rem's growth is a hard-won reclamation of selfhood, moving from a state of self-loathing induced by her sister's shadow to a woman who defines her own value through love. Shalltear’s growth is merely a recovery of baseline settings; her arc is a performative loop of atonement following her mind-control failure, returning her to the exact state of servitude she began with. This reveals a stark inverse relationship between narrative agency and the YPS scale. Rem operates at YPS-2, making her vulnerable and forcing her to negotiate her existence through emotional labor and trauma. Shalltear sits at YPS-3, possessing the capability to level cities, yet she has significantly less Ego (15) than Rem (30). The power gap is a distraction from the real disparity: Rem struggles against her nature, whereas Shalltear is a prisoner of hers. Shalltear's destructive ceiling is high, but her ceiling for personal autonomy is nonexistent because she is a product of a creator's fetish. Rem’s lack of raw power is precisely what allows her to develop a genuine identity. In the economy of isekai servants, the higher the YPS tier, the more likely the character is to be a static asset rather than a living person.