Yuzuru Fushimi hails from a lineage bound by generations of service to the Tsukinaga household as butlers. Rigorously trained from childhood in etiquette, combat, and household management, he internalized the role of a devoted servant as his core identity. His upbringing demanded unwavering duty, subordinating personal desires to others' needs, shaping him into a reserved, disciplined figure who masks individuality behind meticulous professionalism. Initially tasked as Hiyori Tsukinaga’s personal attendant, their relationship gradually transcended formal hierarchies, with Hiyori embracing him as a confidant. This blurred dynamic clashed against Yuzuru’s ingrained subservience, sparking silent conflict as he navigated Hiyori’s push for equality. Yet their bond persisted, tempered by mutual respect and an unspoken acknowledgment of their contrasting perspectives. Following Hiyori’s temporary overseas departure, Yuzuru joined Eden under Ibara Saegusa’s command—a shift that tested his self-concept. Tasked with ambitions beyond butlery, he initially resisted Eden’s idol activities but eventually harnessed his administrative prowess to oversee logistics and mediate member disputes. His loyalty broadened to align with Eden’s objectives, though he approached internal friction with detached practicality. Exchanges with Eden members, notably Nagisa Ran and Jun Sazanami, subtly unveiled his capacity for emotional nuance. Despite his stoicism, he learned to decipher their idiosyncrasies, sporadically dispensing advice or sardonic wit. His rapport with Ibara remained businesslike yet cordial, united by pragmatic interests rather than personal affinity. Central to his journey is the tension between obligation and self-definition. While steadfast in service, fleeting acts hint at a longing to forge an identity unshackled from legacy. This emerges most in his shifting dynamic with Hiyori, where he tentatively sets limits without fracturing their connection. His evolution remains deliberate—a quiet dance between tradition and selfhood. Family ties beyond their professional service to the Tsukinagas remain undefined. Minimal mention of hobbies or personal pursuits reinforces his duty-bound persona. Though trained in combat and strategy, these skills seldom feature in his idol role. The narrative underscores his ability to adapt within inflexible systems, portraying someone who bends constraints without breaking them.