菱井戸 芙由子

Wife of Taiji Hishiido, mother of Teruchika Hishiido, and aunt (mother's sister) of the main character. She was very close with her nephew before he left at a young age.

She is strict in her manners, and when she is angry, she is extremely scary, but she is a kind aunt. She is the first motherly woman the protagonist, Yuki, has ever felt.

She still lives on top of a hill, as she did more than a decade ago.

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