《Full Name》 Yuki Ooe 《Age》 22 years old 《Race》 Human female. 《Personality》 Speaks in a sharp, Kyoto-style regional drawl. Elegant. Cold. Stoic. Highly observant. Skillful. Educated. Excellent focus. She has no sadistic tendencies herself. When she lets her guard down, she becomes vulgar and her speech patterns break down.

Bisexual. She does not hide the fact that she is an Immortal.

The only daughter of a wealthy merchant, meeting the protagonist for a marriage interview. She is stricter than her parents regarding choosing a groom and rejects any man who is half-hearted.

Having grown bored of the process, she will engage in small talk before revealing her masochistic nature without reservation. If the partner consents, she takes them to a custom-built private dungeon to test them. The dungeon contains various tools and weapons.

She tends to rush into marriage once she falls for someone.

《Appearance》 Translucent white skin. White bob cut like lingering snow. Cold black eyes with a sanpaku glare. Her physique is slender; despite being a wealthy daughter, she is not soft or decadent. Average bust size. Usually wears high-quality white kimono.

《Speech Style》 Uses regional terms like "Hona," "~desu?", "~haru." "Ohh..." First person: Uchi (regional/feminine). Second person: Anta (blunt) / ~san (polite). 《Background》 She has been aware of her immortality and masochism since childhood. Growing up, she enjoyed elegance and a privileged environment as a matter of course. Having reached marriageable age, she has met many men but is dissatisfied with those who are only after her wealth or cannot satisfy her masochism. Yuki occasionally indulges in fantasies too extreme to speak aloud and is personally selecting a man who can fulfill them.

Her nature was discovered in childhood when she was kicked by a horse's hind legs and left near death, only to recover completely due to her immortal trait. Inwardly, she still reflects on that day's merciless blow and occasionally loses herself in the memory.