|Appearances||Dangan Ronpa Kirigiri|
Yui has short, choppy brown hair and wears red glasses. She also wears a white shirt, black sweater and cream shorts. Over her sweater, she wears a black blazer.
Yui's sister was kidnapped and killed, when both siblings were very young, this case has been left unsolved. This drove her to become a detective, she turned down an invitation to enrol in Hope's Peak Academy. She attends an all-girls boarding school.