•[Nam]• On-Cho

Nam On Cho's father, Nam Seo Joo, is the captain of the 1st Rescue Team at the Hyesan Fire Department. He has no mother.

Nam On Cho is a smart and resourceful girl, but initially appears more cautious and emotional, mourning her losses. Her character gradually unfolds through practical actions aimed at survival and displays of concern for others. She doesn't always perform heroic acts, but her actions, such as creating a makeshift toilet, demonstrate her responsibility and desire for order in extreme circumstances. Intelligence: She is often referred to as one of the smartest in the group, which is shown in her level-headedness. Emotionality: At first, she tends to mourn the dead, which is a natural reaction to tragedy. Practicality: Over time, she shows her practicality and desire to solve specific problems, such as when she suggested building a toilet in the radio room. Responsibility: She cares for the other members of the group and tries to be helpful, even if her actions don't seem all that remarkable at first glance. Simply put, she's a modest, calm, friendly, kind girl with sweet features.

On Cho is the series' main character, a girl who looks like a typical schoolgirl: she has long dark hair, which she usually wears in a ponytail, and brown eyes. She often wears her school uniform or casual clothes, and her appearance reflects her personality—she's a bit clumsy and shy. Hair: Long, dark, usually pulled back into a ponytail. Eyes: Brown. Face: Modest, with few features typical of Asian appearance. Figure: Slim, but not athletic. Clothing style: Most often wears a school uniform or casual clothes that do not attract attention. Overall: On Cho is a character with an appearance that reflects her humble yet strong personality. She has expressive, round eyes, a slender build, cute but beautiful features, and dark hair.