Yukinojyo Uguisutani is a male student with light brown neck-length hair and matching eyes. His pale, cold-toned complexion marks his heritage as a yukibito. In his ayakashi form, his hair lengthens into a ponytail, and he wears a pure-white kimono paired with teal hakama, zori sandals, a sheer veil, and two rosary necklaces—one white and dark blue, the other solely dark blue. For casual traditional wear, he favors a lavender kimono secured with a black obi, sometimes layered with a black scarf. Modern attire sees him in a dark blue blazer over a white shirt, accented by a light purple scarf, grey jeans, and dark brown loafers.

He studied at Ayakashi Gakuin, forming bonds with peers like Miyabi, Chikage, Shinra, Kyoga, and Samon. Sent to the human world for pre-graduation training, he fell deeply for a human woman. Clan obligations and his potential leadership role forced their separation, though she gifted him a violet as a keepsake. After negotiating his return, he found her aged and wed to another. Resolving to avoid future human entanglements, he preserved the violet as both a reminder of lost love and a lesson in the impermanence of mortal lives.

Gentle and introspective, Yukinojyo harbors a wealth of human-world knowledge and nurtures a passion for gardening. His culinary creations lean excessively sweet, deterring others from sampling them. Though approachable, he guards his heart, maintaining distance from humans to avoid repeating past pain. Intense emotions trigger a chilling drop in ambient temperature, and he seldom speaks of his history, revealing fragments only when trust is earned. The dried violet endures as a quiet testament to a love that shaped his resolve, anchoring his belief in the divide between human and ayakashi realms.