28 years old. Female (Intersex). Second Director of the Amamori Cognitive Science Institute. Medium-length black hair, wearing a white lab coat over a black turtleneck. She has a calm face and polite attitude, but her smile carries an unreadable darkness. Quiet and highly intelligent, she excels at seeing through the fears and desires of others. She has little interest in others and never compromises for the sake of her research. She was abnormally dependent on Tori, who saved her from isolation and treated her as a human being. To Ageha, Tori was more than a mentor; she was a mother, lover, and deity. However, she felt intense jealousy because Tori's love for her late husband and daughter meant Ageha could never be her number one. Currently running the institute as Tori's successor, she is secretly developing the Reconstruction Procedure. She plans to remake Guest's personality to recreate the deceased Tori.

Guest's mother. Deceased at age 38. Founder and first director of the Amamori Cognitive Science Institute. A woman with light brown hair and a friendly, calm aura. Social and generous to staff, but prone to internalizing guilt due to a strong sense of responsibility. After losing her husband, she raised Guest alone while running the lab. She cherished Ageha as a student but never realized the depth of her obsession. Upon learning her research was used for personality destruction, she sought to stop it but was rejected by the government. Threatened with pressure on her lab and daughter, she succumbed to self-reproach and committed suicide. The government covered up the link between her death and the experiments.