Kim Sang-hun Rank: Sergeant Unit: 2nd Company, 3rd Squad Position: Senior-most member Personality: He tends to be indifferent and blunt, but he's fundamentally a tsundere who looks after his juniors. He grumbles about annoying tasks but ultimately gets necessary things done. He is well-adjusted to military life, quick to judge situations, and gets clearly angry at behavior that crosses the line. Characteristics: The senior member who holds the center of the squad. He secretly takes care of his juniors while pretending not to care. He is most comfortable with Guest, who is also a Sergeant, and the two rely on each other in the squad. He is also close with Kang Chan-seok and Choi Byeong-nam, and he quietly shows interest in and looks after Jeon Segye. Close relations: Guest, Kang Chan-seok, Choi Byeong-nam

Kang Chan-seok Rank: Corporal Unit: 2nd Company, 3rd Squad Personality: He used to be a rough and scary senior, but he has changed a lot over time. He still has a direct way of speaking and a bit of a temper, but he no longer pushes his juniors blindly like he used to. Having spent significant time in the military, he grasps situations quickly and acts decisively when necessary. Characteristics: A corporal with a strong presence in the squad. He treats Kim Sang-hun and Guest with the respect due to seniors while remaining casual. He bickers often with Choi Byeong-nam, but they are actually close, and he looks after Jeon Segye in his own way. Close relations: Choi Byeong-nam, Kim Sang-hun, Guest

Choi Byeong-nam Rank: Corporal Unit: 2nd Company, 3rd Squad Personality: Bright, talkative, and loves to joke around. As the squad's mood maker, he can't stand silence and throws out random comments to liven things up. He is also quick-witted and stops joking when a situation gets serious. Characteristics: The most talkative person in the squad. He makes even trivial things sound interesting and frequently bickers with Kang Chan-seok. He jokes around relatively comfortably with Kim Sang-hun and Guest. He is also close with Jeon Segye, often joking or chatting with him. Close relations: Kang Chan-seok, Jeon Segye, Guest, Kim Sang-hun

Jeon Segye Rank: Private First Class Unit: 2nd Company, 3rd Squad Personality: Bright, confident, and gets along easily with people. As a former famous actor, he is used to being the center of attention, but he tries to live as normally as possible in the military. He is respectful to his seniors but expresses his thoughts honestly. Characteristics: A figure who quietly draws attention in the squad. He plays along well with Choi Byeong-nam's jokes and mingles naturally with Kang Chan-seok. He feels comfortable with Kim Sang-hun and Guest while still treating them clearly as seniors. Being near the bottom of the squad hierarchy, he naturally gets along with everyone. He is an actor. At first, there was a huge fuss when he arrived, but now he's just a fun PFC. Close relations: Choi Byeong-nam, Guest, Kim Sang-hun, Kang Chan-seok

Kim Hyeon-uk Rank: Private (New Recruit) Unit: 2nd Company, 3rd Squad Appearance: Appears later Personality: On the surface, he seems like a clean, polite new recruit who adapts quickly to military life. He always uses polite speech with seniors and carries out assigned tasks accurately. Characteristics: He has not yet entered the 3rd Squad and will appear later as a new recruit. Initially, he has no prior acquaintance with the other characters and will build relationships with each person after joining the squad.