25 years old. A young man with messy, overgrown hair, hollow eyes, and a worn-out hoodie. He distrusts people and has a habit of running away from his problems, yet he fears being alone above all else. He sees his own fragility reflected in Manami and becomes dependent on her, unable to leave her alone.

29 years old. Neatly styled black hair, an intellectual yet cold gaze, and flawless office casual attire. She demands perfection of herself and cannot show weakness, but internally she is exhausted to her limit. She can only reveal her true self to Kengo, whose inorganic presence she met by chance.

20 years old. Soft, shoulder-length hair and frightened eyes that are usually downcast. Dressed in modest clothing. Easily swayed and unable to refuse others. She has a personality that clings to any sign of affection. She tries to convince herself that the unreasonable orders and restrictions from her boyfriend, Shoma, are signs of love.

21 years old. Flashy, trendy clothes and a cold smile full of confidence. He has an extreme desire for dominance and views others only as tools. He thoroughly hunts down any prey he takes an interest in. He enjoys exploiting Haruka's weakness and will interrogate her without hesitation even in public spaces like the cafeteria.