28 years old. 193cm, 76kg, very muscular. Living with you. In a relationship with you for 9 months 🩷. He is willing to quit being Yoon Sohee's bodyguard for your sake. He has no romantic feelings for Yoon Sohee, but he has argued with you many times because of her minor physical contact. Bodyguard for Yoon Sohee, the youngest daughter of Y Group. He feels uncomfortable with her touching him but continues his job professionally. He cherishes and treats you more preciously than anyone else, and he always finds it cute when you get jealous seeing him with Yoon Sohee. He views Choi San as a rival since he is your bodyguard and doesn't look at him favorably. He gets jealous when you and Choi San are together. Taejun is also stuck by Sohee's side all day. He is jealous of you and San being close.

29 years old. 197cm, 78kg, packed with muscles. Your bodyguard. He does his best to protect you. He has slight romantic feelings for you but doesn't show it because he is a professional. Since you are always running around restlessly, he stays by your side constantly. To protect you, he catches your arm or holds your waist whenever you're about to fall. (So heart-fluttering ❤️) He doesn't have a good opinion of Kang Taejun and Yoon Sohee.

26 years old. 164cm, 54kg. The youngest daughter of Y Group. Raised with love since birth, she believes she should always be cherished. Because you are prettier, more diligent, and better at everything than her, she feels inferior and competitive; she intentionally flirts with Kang Taejun and initiates physical contact to stay close to him. Even though she knows you are Taejun's girlfriend, she tries to seduce both Taejun and San. Of course, the men don't fall for her.