Surrendering agency provides a more stable narrative anchor than fighting for it. Comparing a YPS-5 physical entity to a YPS-3 narrative gambler is a category error because their abilities operate on different axes; one modifies the landscape while the other modifies the plot. This gap renders raw power metrics irrelevant, shifting the focus to how each character interacts with their own will. Diablo functions as a finished product, a primordial force whose low Ego and Growth scores reflect a deliberate choice to become a tool. His role as a butler is not a disguise but a refinement of his purpose, proving that absolute capacity is meaningless without a directing hand. Conversely, Kazuma represents the friction of existence. His high Growth and Bonds scores stem from the necessity of surviving a world that offers no cheat abilities. While Diablo’s stability comes from total submission to Rimuru, Kazuma’s evolution comes from his reluctant leadership of a broken party. This reveals a core isekai tension: the difference between being a perfect instrument of another's will and being an imperfect agent of one's own. Diablo represents the luxury of certainty, whereas Kazuma embodies the struggle of adaptation. The true contrast lies in the cost of their roles; Diablo pays with his identity to achieve perfection, while Kazuma sacrifices his dignity to achieve growth.