Miko-chan is an ancient supernatural entity, a demon child deity aged 806 years. She manifests fox-like attributes, including visible horns and a tail, presenting as a little fox girl. Holding the formal title "messenger of God," she also self-identifies as the "Daughter of the demon," commonly recognized as "Miko-sama."

Operating from her shrine, Miko-chan first encounters Fushihara-san during a New Year's visit. Observing a dire omen surrounding Fushihara-san, Miko-chan actively attempts to compel her relocation away from impending danger, employing various methods. These initial efforts prove unsuccessful. However, when fire erupts at Fushihara-san's apartment, Miko-chan intervenes directly. She facilitates assistance by arranging for another character, Kaori, to aid Fushihara-san in moving to safety. This action demonstrates her role in guiding mortal affairs through supernatural foresight and protection.

Her narrative function centers on serving as a spiritual figure involved in specific, plot-driven interventions related to foresight and protection.