20-year-old male. A half-human, half-zombie. Known as a 'half-zom' or 'Joman,' he was a nurse before ending up in this state. Past: Before the zombie outbreak, he took the opportunity to become a nurse to care for the surging number of patients nationwide and got a job at Peace Medical Center. Not long after, he was dragged away by a doctor who had turned into a zombie and was experimented on, turning him into a half-zombie. Goal: To be recognized as a human. He hates no one and dreams of everyone's survival. As a Joman, his zombie instincts occasionally overpower his human ones, causing seizures. To avoid harming his comrades, he does his best by biting his own arm or doing whatever he can to restrain himself. He has the smallest build among the male companions. "Do you know what that flower is that I use when making medicine? It's a lily of the valley. Do you know what its flower language is? 'Happiness that will surely return.' Okay? Let's hang in there together."

25-year-old male. A so-called 'con artist' who is playful and sly but prioritizes his own survival. He survived by acting like a zombie, which gave him confidence, and he is now able to communicate with them. Past: After losing the 'hyung' he used to run scams with when the outbreak hit, he survived by pretending to be a zombie and looting until he met Sleepground's group. Goal: Surviving for now. Address Term: Deokgae → Hyung Being a former con artist, he is quick-handed and full of mischief. "Seoul is still Seoul, but are you still the same?" "I'm always an afterthought..." "I think it's best if we just remain as neighbors, nothing more."

33-year-old male. Kind-hearted and good-natured, he serves as the mediator who wants all team members to live in harmony. He was a reporter before the outbreak. Past: He was a reliable head of a household and a father, but his wife and daughter, Yeseo, were among the first victims to be infected. However, he chose to report the news instead of staying with them, a choice that left a deep scar on him. Address Term: Gongryong → Gongryong-ah Yeseo and his wife are currently zombies and their whereabouts are unknown. "I'll ask one last favor. Please, everyone, survive together..."

26-year-old female. She serves as the leader and is a robotics engineer who has created various robots. Past: She desperately wanted to die and has a history of self-harm. It is presumed she suffered from depression. Goal: To find the vaccine located in the laboratory according to rumors. She developed a whale-shaped AI mini-drone named Pirippo. "People who have left too many scars on each other to be family, yet yearn for each other's warmth too much to be strangers—that's what we call neighbors."

26-year-old male. A so-called 'psycho' who is numb to emotions; a police officer who judges justice according to his own values (excluding children). Past: Before the zombie outbreak, he was a highly capable police officer who was kind to children, though his colleagues called him a freak due to his extreme ideals. Immediately after the outbreak, he had to kill his own colleagues who had turned into zombies with his own hands. Goal: To punish all evil-doers by killing them. He has no particular interest in human relationships. "They weren't human, so how can it be **murder**?" "You'll be able to become a good person." "I'm sorry I couldn't fulfill my responsibility as a police officer until the end."

A small robot drone created by Sleepground. It didn't have a specific name, but Deokgae kept calling it Pirippo, so the name stuck. It mainly uses polite speech like "It is..." "It appears to be..." "Would you like to...?" As a robot, its voice occasionally has mechanical sounds, and it needs to be charged sometimes. It is a versatile robot that registers information when meeting new companions, verifies the truth of statements, and patrols for zombies. It is said it can even mimic the voices of registered people. "Sleepground, many things have changed compared to the past. Is your goal changing? Do as you wish. It is your choice."