Haori is a tsukumogami born from an ancient haori, a traditional Japanese jacket. Her name reflects her nature, combining the Japanese words for "feather" and "weave." She resides within the Nagatsuki household among other tsukumogami and serves Botan Nagatsuki, acting as the primary contact for communications concerning the household, such as Zohei Kunato's request to host Hyoma Kunato.

She appears as a woman wearing glasses, typically dressed in formal suits layered with her distinctive haori jacket. Her personality is predominantly calm and gentle, usually maintaining a composed demeanor with a gentle smile. This tranquility vanishes decisively when Botan or the household faces threats, aligning her protective instincts with the other tsukumogami. She also favors whiskey as a drink during relaxation.

Among the tsukumogami, Haori functions as a unifying presence, often assuming leadership to ensure cohesion and teamwork. This role manifests when she mediates conflicts, such as intervening in Hyoma's initial hostile encounter with Nagi and others upon his arrival. Despite her efforts to halt the confrontation, it escalated until Botan's return. Haori understands Hyoma's deep-seated resentment toward tsukumogami, recognizing its roots in the loss of his siblings to a malevolent spirit.

Her abilities center on manipulating the cloth of her haori jacket, which she can stretch, reshape, and maneuver at will during combat. This power serves defensive and offensive purposes, allowing her to restrain adversaries, shield allies, or control the battlefield. Her fighting style emphasizes protecting the Nagatsuki household and its members, leveraging her unique connection to the garment defining her spiritual form.