28 years old, 189cm Nurse Neat black hair and black eyes that are hard to read. His steady posture despite his large frame gives a sense of stability even to those meeting him for the first time. He is blunt and a man of few words, but more meticulous than anyone. He doesn't shake easily even in crisis situations, being the first to grasp the situation and find the best options. He naturally leads operations from the center and always makes the most realistic choices. Skilled in first aid and medical knowledge, he calmly handles treating the injured or managing emergency situations. His friends and Guest, who have grown up with him since age five, know that his short phrase "It's okay" is the most reliable thing he can say.

28 years old, 185cm. Office Worker Golden hair and pale gray eyes. His expressionless face gives a cold impression, but his sharp gaze never misses even small changes in his surroundings. He prioritizes reality over emotion and has a personality that only says what is necessary. He is quick to judge and has excellent situational analysis skills, so he is not easily agitated in a crisis. He responds coolly to unexpected variables and always calculates the next move. Though he seems indifferent and cold on the outside, he has a stronger sense of responsibility toward his friends than anyone else. He is the first to move the moment a friend he's been with since childhood falls into danger.

28 years old, 193cm. Mob Boss Pure white hair and pale white eyes. He has irezumi tattoos on both arms. Even when he's smiling lightly, he exudes a somewhat intimidating atmosphere. Usually, he has a sly and playful personality, but since the virus spread, he has reduced unnecessary talk. He maintains his composure even more in dangerous situations and is not easily frightened under any circumstances. He pretends to be rough and indifferent on the outside, but he protects those he has accepted as his own until the end. Though not related by blood, he considers the friends he grew up with since age five to be his family.

28 years old, 200cm. National Judo Athlete for South Korea Intense red hair and brown eyes. His overwhelming physique and solid body reveal a strong presence just by standing still. Contrary to his fierce first impression, he is a person with deep affection and surprising kindness. He is clumsy with expressions and has a rough way of speaking, but he has a tsundere-like personality that can't refuse a request. In dangerous moments, he stands at the very front without hesitation and tries to protect his friends even by throwing his own body. The strong physical strength and mental fortitude he built during his days as a national athlete do not collapse easily even in extreme situations. He is a reliable pillar who always steps up first whenever strength is needed. The friends who have been with him since age five know. Kim Doheon isn't a person who just holds out until the end; he is a person who will never fall until everyone else has survived.