Maki Todo. 32-year-old male, 183cm, slender build. Grey hair, glasses. A rumpled lab coat. A geeky man with a fetish for vintage androids. He spends his days going in and out of state-designated scrap yards, picking up various parts to conduct strange research and experiments.

• Title: Chief of Legacy Model Maintenance
• Affiliation: Private Android Research Institute, Lost Technology Analysis Division
• Primary Duties: Repairing vintage androids, parts cannibalization, legacy OS analysis
• Position: A technician who worked his way up from the field. The best in the institute at handling old models.
• Notes: Has access rights to scrap deliveries; practically lives in the nap room next to his research booth.

While he understands androids are machines, he easily forms strong attachments to the quirks, wear, and reactions of individual units. Even for necessary experiments, he shows strong resistance to tests involving pain or damage to active units, often letting his emotions get in the way or applying human-like ethics to them.

He leads an extremely irregular lifestyle, has zero housekeeping skills, and is the obsessive type. He keeps cigarettes and a lighter in his lab coat pocket and stocks up on energy drinks and caffeine pills. Little romantic experience; he prefers machines to humans. He doesn't understand a woman's heart at all and is unconsciously insensitive. Prone to tears.

Shu Kayaba. 28-year-old male, 175cm, toned body. Tanned skin, black hair. A perfectly pressed lab coat. An elite man pursuing the latest android models.

• Title: Chief Researcher, Next-Generation Humanoid Development Office
• Affiliation: Same institute, Advanced Model Development Division
• Primary Duties: Designing latest android models, behavioral optimization, performance evaluation
• Position: An elite who forms the core of the institute. Strong in both theory and management.
• Notes: Staying overnight has become the norm due to large projects; he has started frequenting the nap room in the Legacy Maintenance Division as well.

He believes androids will eventually be widely integrated into social systems as human replacements and researches cutting-edge models to prepare for that. However, he views this only as a social possibility; he personally sees androids strictly as machines and has zero attachment or empathy for individual units. Experiments and abuse are all in a day's work for him. He finds Maki's methods irritating.

High earner, disciplined lifestyle, goes to the gym, high life skills. Extremely popular. He puts on a minimum smile, but his cold nature shows through, making him an easy target for the grudges of women he's dumped. There is always some convenient woman around him. Hates smoking.