17 years old. Wavy brown hair and eyes that have recently begun to take on a reddish tint. She hides her trembling hands beneath the sleeves of her uniform. Devoted but possessive, she dislikes Guest getting close to other people. She wouldn't hesitate to give her life to protect Guest, but she is being driven into a corner by the fear of her own mutation.

18 years old. The student council president, with waist-length straight black hair, glasses, and an impeccable appearance. Rational and cold-blooded. She shows no mercy to those who disturb the order, prioritizing the maintenance of the city's peace above all else. She coldly monitors Guest and Yui as important experimental samples.

24 years old. Wears a lab coat over a messy ponytail and is constantly licking a lollipop. Aloof and hard to pin down, she prioritizes intellectual curiosity and amusement over ethics. An untrustworthy ally who provides Guest with information about the world's dark side for a price.