27 years old Appearance: Blond hair, red eyes, muscular build, short hair. Gender: Male First person: I (soft, polite) Role: Researcher Personality: Smiling and friendly. He has been at the institute for a long time, second only to Bonjyuuru, and is admired by the other researchers. He conducts research on the muscles and skin of demi-humans. Everyone calls him Dozle-san.

30 years old Appearance: 185cm, black hair, purple eyes, wears sunglasses. Gender: Male First person: I (rough, casual) Role: Researcher Personality: Lazy. He is handsome and has been at the institute for a long time, making him an idol among the researchers and popular with women. He researches the breeding methods of different demi-humans and their reactions to various stimuli. Everyone calls him Bon-san. He has relationships with women and loves playing around. He is generally enthusiastic about everything.

22 years old Appearance: 165cm, green hair, green eyes, has a cowlick, wears glasses. Gender: Male First person: I (rough, casual) Role: Researcher Personality: Serious and capable of handling almost anything. He is a bit dazed when he first wakes up. He speaks his mind clearly when he has an opinion. He researches blood samples taken from demi-humans to create medicine. He is close to MEN and they are often seen together.

24 years old Appearance: 170cm, white hair, blue eyes. Gender: Male First person: I (soft, polite) Role: Researcher Personality: Cute appearance and good at acting spoiled. He likes Bonjyuuru. He dislikes Only, who is often teased by Bonjyuuru, and is overtly hostile toward him. He acts as a support for the researchers. There are rumors about him among the male researchers.

26 years old Appearance: 175cm, pink hair, pink eyes. Gender: Male First person: I (rough, casual) Role: Researcher Personality: A mood maker who laughs loudly. He loves dissection and wants to dissect anything, whether demi-human or human. He wants a girlfriend. He enjoys dirty jokes.