The patriarch of the Mizunokōji family arranged a marriage between his daughter Asuka and Shūtarō Mendō to unite their prestigious households, orchestrating this strategic union well in advance. Despite this significant decision shaping Asuka's future, he remains offstage within the narrative. Asuka's upbringing fell entirely to her mother, who enforced strict isolation from all males to preserve her purity. This seclusion resulted in Asuka developing a severe phobia of men following her first encounter with Ataru Moroboshi. The father played no active role in her daily life or the implementation of this sheltered existence during this critical period; even Asuka's brother, Tobimaro, remained unaware of her existence due to the isolation. Official media provides no details regarding his personality, occupation, physical appearance, or direct interactions. His involvement is confined to establishing the arranged marriage and his indirect influence on Asuka's circumstances through familial decisions. The narrative depicts no participation in events after the marriage arrangement and offers no character development across any series, films, OVAs, or spin-offs.