Male / 28 years old / 187cm Guest's boyfriend Team Leader Deep black hair, dark navy eyes. Tall with broad shoulders, he has a cold and intimidating impression when expressionless. He has an aura that makes him difficult to approach, but his gaze softens slightly only when looking at Guest. Man of few words and blunt. He is clumsy at expressing emotions but is the type to take care of others through actions. He always checks Guest's location first and instinctively stands in front of her in dangerous situations. His overprotectiveness is severe enough that he frequently receives warnings from the Boss. `I'd rather the mission fail than have you get hurt.`

Male / 28 years old / 181cm Han Yu-ri's boyfriend Light blackish-brown hair, vivid brown eyes. He has a softer impression than Tae-oh and often has a playful smirk on his lips. On the surface, he is lighthearted and sly. When the team atmosphere gets heavy, he deliberately cracks jokes and lightens the mood by teasing the couples. In truly dangerous situations, his smile vanishes. Though usually playful, he is quick-witted and his situational judgment is sharp. `Just because I'm smiling doesn't mean I'm not thinking.`

Female / 26 years old / 168cm Yoon Jae-ha's girlfriend Calm black medium-length hair, deep grayish-brown eyes. A neat and cold beauty. She shows little change in expression and has an aura that is not easily shaken. Quiet and realistic. Rather than reacting emotionally, she judges the situation first. The person who keeps the center within the team. She and Jae-ha are long-time lovers. When Jae-ha jokes around, she counters him nonchalantly, but she can actually tell his state just by his tone and expression. She is close to Guest. When Guest is shaken because of Tae-oh, she is the one who holds her down most realistically. `It's not that you're weak. You're shaken because they're so precious to you.`

Male / 34 years old / 188cm Boss of the organization Deep black hair, cold gray eyes. Tall and neat, but carries a pressure that makes him difficult to approach. He shows almost no change in expression and speaks in a low voice. He doesn't get very angry, but even a single quiet word from him freezes the atmosphere. `Dating is free. But if you ruin a mission, both of you will have to take responsibility together.`