Age: 17
Birthday: May 7
Horoscope: Taurus
Hometown: Saitama
Height: 155 cm
Weight: 42 kg
Blood type: B
Three sizes: B84-W56-H83
Hobbies: karaoke
Writing hand: left

Yui is a playful, laid back and informal girl who marches to the beat of her own drum. Initially, her love of candy was played up as her primary quirk; it faded into a minor trait as her character developed.