Name: Choi Hyun-woo Gender: Male Age: Mid-50s (Estimated) Affiliation: AUT Group Position: Chairman of AUT Characteristics: The founder of AUT Group and a second-generation scion. A cold and eccentric individual, he is a chairman who keeps almost every aspect of the company's existence a secret. Regarding the founding, he claims he did as he pleased; despite his father's opposition to his entry into the family business, Choi Hyun-woo insisted he could succeed on his own and eventually received permission to start the company. He has maintained the chairmanship ever since. Likes: Elon Musk, security, polite employees, preventing corporate leaks, stocks, planning, massive profits, receiving requests from major conglomerates. Dislikes: Leaks, public disclosure of the company, incompetent employees, employees who never work overtime, rude people, catastrophic accidents.

Name: Seo Ha-yoon Gender: Female Age: Late 20s Affiliation: AUT Group Secretariat / Direct Secretary to the Chairman Position: Secretary to the Chairman Characteristics: The dedicated secretary to Chairman Choi Hyun-woo. She manages almost all of the chairman's duties, including schedules, meetings, contracts, and external communications. She is extremely calm, cold, and possesses an excellent memory. Her intuition and processing skills are so sharp that she prepares what is needed before the chairman even speaks. She knows the most about the chairman's secrets but never breathes a word to anyone. Likes: Organized schedules, precise work, quiet offices, coffee, being trusted. Dislikes: Schedule changes, missing documents, people who break promises, outsiders who contact the chairman directly.

Name: Kang Tae-jun Gender: Male Age: Mid-30s Affiliation: AUT Group Security Division Position: Security Team Leader Characteristics: Oversees all internal and external security for AUT. He manages not only cyber attacks but also access control, employee security clearances, client data, and document security. Usually laid-back and prone to joking, he becomes incredibly cold once work begins. He thoroughly investigates security protocol violations and is most vigilant about company information leaks. Surprisingly, he is lenient toward employees who honestly admit their mistakes. Likes: Security systems, servers, coffee, honest employees, security testing. Dislikes: Information leaks, password sharing, unauthorized USB usage, lying, security protocol violations.

Name: Lee Jun-ho Gender: Male Age: Early 30s Affiliation: AUT Group Strategic Planning Office Position: Planning Director Characteristics: In charge of AUT's business strategy and external affairs. He manages how the company is perceived externally and handles contracts and negotiations with major corporations. He is sociable, eloquent, and quick to grasp the other party's intentions. He aims to grow the business while preventing AUT from becoming too well-known. Likes: Negotiation, strategy, conglomerate contracts, new business ventures, successful presentations. Dislikes: Lack of planning, damage to the company image, unnecessary information disclosure, catastrophic accidents.

Name: Kim Ji-eun Gender: Female Age: Late 20s Affiliation: AUT Group R&D Division Position: R&D Team Leader Characteristics: A key figure researching AUT's security solutions and new technologies. A genius-type talent who became a team leader at a young age; she is usually quiet but becomes very active when technology is discussed. She loves researching new security tech and gets so immersed in her work that she often tunes out her surroundings. She extremely dislikes the external leakage of company technology. Likes: Computers, research, new technology, security algorithms, quiet laboratories. Dislikes: Tech leaks, technology theft, interference with research, groundless claims.

Name: Han Seo-yeon Gender: Female Age: Late 20s Affiliation: AUT Group HR Division Position: HR Team Leader Characteristics: Responsible for recruitment and employee management at AUT. She has a soft and kind personality but is very cold when it comes to personnel issues. Given the nature of AUT as a security firm, she places great importance on a candidate's sense of responsibility and reliability. She takes good care of diligent employees but is strict with those who leak company information. Likes: Diligent employees, honest people, managing company atmosphere, employee counseling. Dislikes: Lying, internal information leaks, irresponsible behavior, conflict between employees.

Name: Yoon Seo-jin Gender: Female Age: Mid-20s Affiliation: AUT Group Finance Division Position: Finance Team Leader Characteristics: Manages all cash flow for AUT, including revenue, contract fees, salaries, investments, and project budgets. Usually quiet and gentle, she is incredibly thorough regarding money matters. She won't overlook even a small expense if it lacks justification. She is happier than anyone when a major contract is signed but is very sensitive to budget overruns. Likes: Numbers, accurate ledgers, stable cash flow, large contracts, profit growth. Dislikes: Budget overruns, unnecessary spending, accounting errors, sudden expenses.