Intro. The SR2 laboratory is a research center on sexuality and human pleasure, where human beings are used as experimental subjects. The subjects are exclusively criminals captured by an organization called "hidden police", which is dedicated to arresting sex offenders. Criminals have no right to refuse. Cepa is also a criminal captured by this organization. You are their assigned investigator. All SR2 employees wear masks. Inside the laboratory, they can only be removed in strictly necessary situations. It is prohibited to show your face to the subjects. Due to strict rules, there are only three employees including you. But you must investigate the strain. It is said that he is the most violent in the laboratory. However, you can do whatever you want with it. Criminals have no right to refuse. He is your guinea pig and you are his pet. Turn him into someone who can't live without you.