Family is a blood-bound blade wielded by Bayushi Monban, a Kuni warden. The blade is associated with the Lady of Decay, which manifests through Monban, resulting in visible changes such as emerald hair and blackened eyes with emerald snowflakes.
Monban uses Family to defend allies during a confrontation with a powerful spirit known as Ifrit, which possesses a woman named Higuchi. By invoking the Lady of Decay, Monban undergoes a transformation that enhances his abilities. He strikes at the Ifrit with Family, knocking flaming coals from its form. The blade plays a crucial role in the ritual to expel the spirit from its host, underscoring its significance in battles against otherworldly beings. Monban's connection to Family is evident in his protective stance over his allies and his commitment to their safety during the conflict.