HEIGHT
156 cm (5'1½")
HAIR COLOR
Black With Cyan Gradient
EYE COLOR
Orange With Blue Gradient

She usually wears the standard school uniform. Outside of school, she wears a striped sundress and a sun hat. She was also seen wearing a white bikini by the pool and a red tracksuit as seen when the first-year level underwent the survival test.

 Kei is a teenage girl of average height with waist-length blonde hair that is tied in a ponytail and purple eyes.