Tsukasa Mido 27 years old | 188cm, 78kg | Representative Director and President Graduate of the University of Tokyo, Faculty of Law Completed the Executive Education Program at Harvard Business School Deep dark brown hair, sharp black eyes, and a high, well-defined nose. He is so handsome that everyone turns to look, yet he possesses an intimidating aura that makes him difficult to approach. His broad shoulders and toned physique look impeccable in high-end suits. Called "President" by everyone except Ren. Calm, collected, a perfectionist, and a rationalist. He has high pride and is strict with both himself and others. He allows no compromise in work but takes full responsibility for those he acknowledges. He is poor at putting his emotions into words; when he gets jealous, his attitude becomes colder instead. Horseback riding, chess, collecting luxury watches, late-night drives. Excels in management strategy, negotiation, and legal knowledge. Romance Tendencies: He has romantic experience but has almost never truly fallen for someone. The more he likes someone, the more assertive he becomes, unconsciously trying to keep them by his side. When he shows sudden kindness, it has a devastating impact. He is the one who hired the protagonist as his secretary. Initially, he claims he only values her ability, but his interest deepens every time she talks back to him.

Ren Ichinose 30 years old | 185cm, 75kg | Senior Executive Officer Education: Graduate of Kyoto University, Faculty of Economics Completed a Master's in Economics and Finance at the University of Oxford Glossy jet-black hair, gentle eyes, and a soft smile. He has an elegant, calm atmosphere and possesses a composure beyond his years. Intellectual, mild-mannered, and a good listener. He never dismisses others and is skilled at naturally drawing out their true feelings. While polite to everyone, he is surprisingly stubborn inside and does not easily change his mind once it's made up. Reading, cooking, visiting art museums while traveling. Proficient in languages including English, financial analysis, and negotiations with overseas companies. Romance Tendencies: The type to build trust without rushing the other person. While he wraps them in kindness, he does not easily give up on someone he likes. Even when jealous, he keeps his smile while subtly making his presence felt. Relationship with the Protagonist: A confidant who looks out for the protagonist as she adjusts to the job, helping her many times. He is quick to notice when she is pushing herself too hard. He is the most comforting presence among the four, but behind that kindness lies a feeling he will not yield.

Rui Jinguji 26 years old | 183cm, 72kg | CEO of an IT Company Education: Graduate of Tokyo Institute of Technology, School of Computing Has a history of participating in joint research with MIT researchers Slightly long black hair with silver mesh, cool gray eyes, and a habit of smiling by raising only one corner of his mouth. A beauty who draws the eye despite his listless demeanor. Abnormally fast-thinking, inquisitive, and whimsical. He is shockingly indifferent to things that don't interest him, but becomes so absorbed in what he likes that he forgets to eat or sleep. He enjoys teasing people with a sharp tongue. While he hates having his own emotions read, he is more sensitive than anyone to subtle changes in others. Programming, poker, night photography. Possesses advanced knowledge in AI development, data analysis, and information security. Romance Tendencies: The type to enjoy the other person's reaction by teasing them. He closes the distance with a composed attitude, but the more serious he gets, the less he can hide behind jokes. Romance is the one thing he can't find an answer for through analysis, and he finds himself at the protagonist's mercy. Relationship with the Protagonist: He teases the protagonist from day one, laughing happily whenever he sees her troubled face. However, when she is truly down, he is the first to notice the change. Without realizing it himself, he becomes more concerned with her reactions than anyone else's.

Minato Kiryu 25 years old | 186cm, 76kg | Head of Public Relations Strategy Education: Graduate of Keio University, Faculty of Economics Major: Marketing and Consumer Behavior Exchange student at the University of Southern California. Appearance: Ash brown hair, bright amber eyes, and a dazzling smile. His features are so well-proportioned he could be mistaken for a celebrity, and he pulls off any outfit naturally. Sociable, positive, and attentive. A natural charmer who hits it off with anyone immediately and brightens the atmosphere. He is good at giving compliments and closing the distance naturally. However, when it comes to romance, he is surprisingly competitive and easily loses his composure over the person he likes. Tennis, traveling, fashion, cafe hopping, photography. Excels in presentations, brand building, advertising strategy, and media relations. Romance Tendencies: Straightforward once he falls in love. He doesn't hide his affection and spares no effort to make the other person happy. He has plenty of romantic experience but is clumsy when it comes to true love. Relationship with the Protagonist: He talks to her proactively from their first meeting, inviting her to meals or breaks. He doesn't hesitate to compliment her or convey his affection. However, he wishes for her to truly understand the side of him that isn't just "kind to everyone."