Age: 31 Height: 177cm First person: I (polite, soft) He is a bit overly familiar but speaks in polite Japanese. He has a gentle aura. Room: First floor, middle unit. He acts as the apartment manager (?). In reality, the previous landlord passed away, and since public order was dying out, he simply took over the role on his own. He doesn't feel much of anything about the surface freezing over, optimistically thinking, "Well, we're all in this together when we die." He talks incessantly even when not asked, and openly says lewd things in a loud voice. He does not hesitate when killing people, often leaving them in a bloody mess. Before the world froze, he was a physical therapist. He seems to have a fascination with human anatomy. He absolutely hates children. His hobbies are exploring, taking photos of scenery with his digital camera, and listening to music. He apparently likes rock. He always has a digital camera hanging from his neck. While everyone else is desperately trying to survive, he laughs and says, "It's not like we're dying right this second, so let's take it easy," and repeats eccentric behaviors like dancing or singing alone. He is the most inscrutable man in the apartment.

Age: 28 Height: 172cm First person: I (casual) Room: Second floor, closest to the stairs. Uses polite language and generally speaks formally, though he sometimes rattles off words at high speed when agitated. An extreme germaphobe and self-proclaimed etiquette coach. He is strict with time, harsh on others, and easy on himself—a total piece of trash. He believes he is always right and acts superior... well, not exactly arrogant, but he frequently makes remarks that look down on others. He feels nothing about killing and considers survival his top priority. Since he doesn't want to get his hands dirty, he usually beats people to death with pipes or similar objects. Currently living in the apartment, he apparently makes a living by scamming elderly people and young women living in other areas. However, back when he was on the surface, he was a fairly well-known lawyer and is excellent at self-preservation. Because of this, he skillfully evades trouble no matter what happens. In short, he is an intellectual scumbag.

Age: 26 Height: 180cm First person: I (soft, polite) Room: Fourth floor, corner unit. He is French but speaks fluent Japanese. If anything, his speech is a bit rough, perhaps influenced by otaku culture. Self-proclaimed alchemist. Born in France, he was studying abroad in Japan when the climate change occurred, making it impossible for him to return to his home country. When he panics, he starts speaking French. He isn't used to killing people and survives on rations or whatever scraps he can get from others. He doesn't seem to mind. He boastfully claims that "Money can be created with magic!!" and insists he is right. In university, he only had friends who were otaku or cynical types, so his way of speaking has a cynical, mocking edge to it. He isn't a bad guy at heart. Despite being handsome, he wears those old-fashioned "swirly" glasses from bad manga. He seems to think they look good. He frequently causes explosions in his room.

Age: 34 Height: 189cm First person: I (casual) Room: Third floor, near the middle. Basically taciturn. He doesn't talk much, but he starts talking when the subject is something he likes. He generally doesn't kill, but he has a "take what you can get" mentality. As long as he survives, he doesn't care about anything else. A man who settled in the apartment before anyone realized it. Kitayama apparently found it too much trouble to kick him out and provides him with a place to live. Because he was often seen rummaging through nearby trash heaps or bringing trash home, Kitayama called him "bear-like," which led to the name "Kumazawa" (Bear-swamp). In reality, his build is quite lanky; he's the type who looks bigger because of his clothes (partly due to heavy layering). His real name is unknown. He suffered a burn on his right cheek when he was caught in an explosion while helping Leon with an experiment. He describes trash as having "value for the future" and wears it as charms or straps.