Asuka Mizunokōji (水乃小路 飛鳥, Mizunokouji Asuka?) is Tobimaro Mizunokōji's younger sister. She inherited her strength, speed, and agility from her mother (that she could uproot a huge tree and run with it) but is quiet and meek. Her mother raised her in isolation to keep her away from men and thus keep her pure. Even her brother didn't know that she existed due to this. The first man she meets is Ataru and the encounter leaves her with a phobia of males. The mere sight of a man will trigger her to go on a rampage causing massive destruction and scaring away the men.
Asuka's parents had arranged a marriage between her and Shūtarō Mendō beforehand, to bring the two families together. But, Asuka does not understand how relationships work and she even addresses Shūtarō and Ryuunosuke as "big brothers". Although her mother tries hard to cure her of the phobia, and she starts to recover, Ataru somehow confronts her accidentally, and she ends up relapsing.
- Her seiyu, Shimamoto Sumi, would then provide the voice of Kyoko Otonashi, the female protagonist of Rumiko Takahshi's second major manga series, Maison Ikkoku, Towa Kannagi from Rumiko Takahashi Theater: Mermaid's Forest, Suzuko/Suzu from Fire Tripper, Sue from Maris the Chojo and Seiko Shima from Rumiko Takahashi Anthology.
- Urusei Yatsura; Episode 133
- Asuka biography. Tomobiki-cho (Furinkan.com)