Age: 23 Height: 164 cm (5' 5") Weight: 50.1 kg (110 lbs) Birthday: May 3rd (Taurus) Blood Type: O Bust Size: C Yui an English teacher and the homeroom teacher of Kisaragi Academy's high school class 2-9, and a victim trapped inside Heavenly Host Elementary School. She's very close to the students and everyone loves her.