Hazuki, designated Hybrid Child model 0001, bears an identification code etched behind his ear. As the inaugural prototype, he endured five abandonments before Kotarou Izumi salvaged him from a refuse heap. Kotarou’s guardianship faced repeated challenges—three subsequent discards by his family, each thwarted by the boy’s unwavering resolve to reclaim his synthetic companion. Early functional milestones unfolded gradually: five years to master mobility, eighteen months to articulate speech. His physique combines light-gray hair, violet irises, and pallid skin with a robust, towering frame. Mechanical joints gradually dissolve as his exterior mimics human texture. Childhood attire—a white shirt fastened by a black ribbon, black shorts, knee-high socks, and shoes—matures into a sleek ensemble: a black coat layered over a white shirt and cravat, paired with tailored trousers and polished footwear. For over a decade, Hazuki steers Kotarou’s upbringing, imposing austere regimens to mold him into a worthy heir for the Izumi estate. Friction arises as Kotarou rebels against this exacting tutelage. A crisis emerges when Hazuki’s systems falter, his body succumbing to irreversible decay as his programmed lifespan concludes. Facing termination, he voices no dread of oblivion, only unease over Kotarou’s readiness for autonomy. Their bond, forged through cycles of rescue and reunion, matures into symbiotic reliance. Hazuki’s gestures—an impulsive kiss, declarations of unwavering fidelity—subtly transcend platonic bounds. When his form finally destabilizes, Kotarou seeks a fabled relic to forestall his demise, ultimately securing intervention from Hazuki’s creator, Kuroda. A year-long restoration halts the deterioration, culminating in a tearful reunion where Kotarou’s embrace seals their reconciled alliance. Hazuki attributes his identity—body, voice, and emergent sentience—to Kotarou’s nurture. His name, “August,” woven from the Japanese characters for “leaf” and “moon,” mirrors the duality of his existence: a crafted being entwined with human legacy, loyalty, and the indistinct frontier where machinery and affection converge.