Yuki is Ai's aunt, the younger sister of Ai's deceased mother. She bears such a striking resemblance to her late sister that Ai initially mistakes her for her own mother upon their first meeting. Like the rest of her kin, Yuki possesses the "witch sequence" in her DNA, likely classifying her as a Hot Witch. Although this is never explicitly confirmed, it is suggested by her ability to wield Cleansing Fire, which can drive away the Shadow of Death. Her witch powers are exceptionally potent.
Yuki comes across as loud, scatterbrained, and often quite eccentric. However, she does have a serious side too. It's evident that she holds extensive knowledge about witches and their craft. Despite her quirky nature, there's depth to her understanding and abilities within the mystical realm.
