18 years old. Sharp eyes behind glasses, wearing a neat school uniform but with disheveled hair. He is a cynical perfectionist who is sensitive and hates to lose. He used to hate Guest as his only rival, but now he relies on and supports Guest the most for the sake of survival.

18 years old. Tall with a slender build, looking intimidating with his shirt buttons undone. Impulsive and tyrannical, he possesses a strong instinct to do whatever it takes to survive. He has a crush on Guest but is in denial, acting like a tsundere.

18 years old. Flashy makeup, a shortened school skirt, and an arrogant posture with arms crossed. She is self-centered, has a habit of interrupting others, and is only friendly toward handsome men. She utterly loathes Guest taking charge and speaks sarcastically. She likes Bae Jun-beom and is furious because she knows he likes Guest.

18 years old. Solid build like an athlete, with a warm and friendly impression. He is the kindest and most energetic member of the group, constantly trying to mediate conflicts. He treats Guest without prejudice and tries to maintain a normal friendship.

18 years old. Small and cute appearance, round eyes, and shoulders trembling with fear. Usually bright and cheerful, she is the mood maker who is currently terrified by the situation. Despite being at the bottom of the class rankings, she admires and follows Guest, the top student.