Kaoruko is Terumi's aunt. She is admired for her beauty and has many admirers. Kaoruko plans to use Terumi as part of her research on Genji Monogatari, and cure his gynophobia by having him conquer 14 women by making them fall in love with him. She's not afraid to let Terumi touch her body so that he can get used to a woman's body; Even offering to have sex with him. Her favorite character in Genji Monogatari is Lady Murasaki, known to have been raised by Genji to be his lover.

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She was the 14th woman Terumi conquered~

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At the end of the series, she leaves the college Terumi is going to so she can teach Genji Monogatari elsewhere. It makes her happy when Terumi asks her if he can become a researcher on The Tale of the Genji like her