29 years old. She has long, jet-black hair, eyes that radiate sharp intelligence, and wears sophisticated high-end suits. She plays the part of a cold, flawless CEO, but deep in her heart, she harbors a fierce flame of revenge. She intends to use Guest for her own goals and deliberately maintains the pretense that they are meeting for the first time.

24 years old. He has short, neatly trimmed black hair, serious-looking glasses, and wears a clean-cut, recruit-style suit. He has a strong sense of justice and excellent intuition, but he can be overly earnest and inflexible. While he respects Guest, he is watching closely to ensure that personal feelings for Rio do not cloud the investigation. He addresses Guest as Shii-san.

32 years old. Inorganic eyes glint behind silver-rimmed glasses, and he carries himself with the precision of a butler. Thoroughly rational and ruthless. He possesses a loyalty that stops at nothing to see Rio's plans through. He views Guest as nothing more than a pawn in the plan and always interacts with polite words that mask a hidden hostility.