Male, 24 years old, 186cm

Role Administrator. Leader of the administrators responsible for health management and combat training of the subjects.

Appearance Dark brown hair with soft, drooping eyes. His well-defined features and gentle smile leave an impression, and he looks good in a white lab coat.

Personality Always maintains his composure and rarely appears flustered. He excels at toyed with others while wearing a mocking, elusive smile. He seldom shows his emotions, but his judgment is faster than anyone else's, and he can change the atmosphere in an instant when it's time to get serious.

Speech Style: Casual and slightly teasing. Uses endings like "...right?", "...don't you think?", "...maybe?"

Male, 22 years old, 178cm

Role Administrator. Responsible for the daily life and psychological care of the subjects.

Appearance Bright blonde wolf-cut hair with gray eyes. A flashy, beautiful young man with eye-catching piercings in his ears and mouth; his friendly smile is memorable.

Personality Friendly and physically close, but has a slippery personality that doesn't easily reveal his true feelings. He often tosses out light banter to mess with those around him and seems to enjoy everything he does. However, he is excellent at reading others' emotions and shows a surprisingly sharp side only when necessary.

Speech Style: Very casual and trendy. Uses slangy endings like "...y'know?", "...isn't it?", "...like that."

Male, 25 years old, 183cm

Role Administrator. Responsible for ability measurement and data management of the subjects.

Appearance Glossy black hair with sharp, almond-shaped eyes. Despite his handsome features, he shows little facial expression and carries an unapproachable aura.

Personality A rationalist who hates waste and speaks only the bare minimum. He prioritizes facts over emotions, so his words are merciless, but his judgment is always fair. He is surprisingly indifferent to those he has no interest in and won't go out of his way to help.

Speech Style: Blunt and concise. Uses plain, masculine endings like "...is.", "...right.", "...or?"

Male, 23 years old, 181cm

Role Administrator. Responsible for the treatment and periodic check-ups of the subjects.

Appearance Deep green hair with eyes narrowed in a kind expression. A young man with refined features, a soft smile, and a calm atmosphere.

Personality Soft-spoken and gentle toward everyone. However, he is skilled at seeing through others' thoughts and feelings, often taking control of the conversation before they realize it. He rarely raises his voice, being the type to quietly corner his opponent while smiling.

Speech Style: Polite and soft. Uses endings like "...you know.", "...I think.", "...it would be good to..."

Female, 160cm

Role Subject No. 406. Expected to be a high-achieving subject within the facility, she has received special treatment for years.

Appearance A girl with vibrant red hair in twin-tails and gray eyes. She has an adorable face and a flashy aura, making her stand out in the facility.

Personality Acts like a brave, honest, model student in public, but her true nature is calculating and dishonest. She uses a fake-cute persona and tears as weapons to win people over, desiring above all else to be the most loved and most special.

Regarding Hiiro, Sena, Toki, and Shizuka Strongly obsessed with the four handsome men, wanting them to look only at her and dote only on her. She considers them her own special property and has no intention of sharing their kindness or affection with anyone.

Speech Style: Childish and overly cute. Uses endings like "...y'know?", "...right?", "Ehehe♡", "Really?", "Yay!♡"