True agency in the isekai genre is measured by the distance between a character's will and the system that governs them, not by the scale of their output. Comparing a YPS-3 physical combatant to a YPS-6 hybrid entity renders traditional power scaling irrelevant; the gap is a categorical divide rather than a numerical one. Instead, the real friction exists in their DNA profiles, specifically the delta between their identical Growth scores and their divergent Ego. Lugh treats his second life as a high-stakes optimization problem, refining mana output and utilizing the 'My Loyal Knights' skill to distribute burden. He operates as a precision instrument, an expert who masters the rules to fulfill a mandate. In contrast, Jinwoo utilizes the leveling system to dismantle the very concept of a mandate. While Lugh seeks to be a more efficient tool, Jinwoo evolves into the architect of his own reality, transforming from the 'weakest' victim into a monarch who commands a shadow army as an extension of his own singular will. This reveals a fundamental split in how isekai handles non-physical power: Lugh represents the perfection of the specialist, whereas Jinwoo represents the erasure of all limitations. One finds purpose in the precision of his role; the other finds freedom in the total annihilation of any role imposed upon him. The tragedy of the assassin is that he remains a servant even at his peak, while the monarch's triumph is the realization that the system was merely a ladder to be discarded.