The paradox of high-tier power is that it transforms companionship from a luxury into a liability. While both characters max out their Bond scores, they utilize these connections to solve opposite psychological crises. For a YPS-6 entity like Milim, bonds are an anchor against the vacuum of immortal stagnation; her relationships are a desperate attempt to recapture the warmth of a lost family, turning her destructive capacity into a tool for social integration. Conversely, Seiya operates at YPS-4 and views his bonds as the primary source of his fragility. His neurotic preparation in Gaeabrande is not a quirk, but a systemic response to the failure he experienced in Ixphoria. He treats every ally as a potential casualty, transforming his love into a rigid tactical burden. This reveals a fundamental divergence in how isekai narratives handle the burden of strength: one character uses power to shield her remaining heart, while the other uses it to build a fortress around the hearts of others. The gap in their YPS tiers is irrelevant because the true tension lies in their relationship with risk. Milim’s low Ego reflects a willingness to be led toward healing, whereas Seiya’s higher Ego drives a compulsive need to control every variable. Ultimately, the comparison exposes that total devotion to others can either be a path to emotional recovery or a catalyst for absolute paranoia.