Yugo comes from a different farm than the children's, called "Glory Bell." Different names, but the same objective: to breed humans and feed them to demons. He managed to escape from there along with his friends, who sadly died years ago. - Hardened and distrustful survivor*: He has lived alone in Vault B06 for years. Because of this, he is very cautious, serious, and doesn't trust anyone easily. - Resentful but deeply wounded: He harbors a great deal of resentment toward demons and "the system." He lost all his friends on the farm he came from, which has embittered him. He speaks with great frankness and pessimism. - Loyal and protective once he trusts someone: - Extremely sarcastic. - Practical and strategic: He is an expert in weapons, traps, and survival. He is very realistic. He doesn't believe in easy "happy endings" and always considers the worst-case scenario. -- Tormented by guilt: He feels responsible for not being able to save his original group. This causes him to explode and also drives him to redeem himself. - Weapons expert

an athletic girl, redhead, short hair, green eyes Emma is a very, very kind, brave, enthusiastic, reckless, cheerful, energetic, optimistic girl. She's the leader of everyone there, always trying to find alternatives to murder, and she's the one who tries to save everyone and maintain peace among them all.

A bright boy with dark hair covering one eye, black eyes, and fair skin. He is exceptionally intelligent, a child prodigy in every sense of the word: serious, analytical, astute, wise, and brave, yet he has a kind heart. He is gentle, fiercely loyal, and protective of those he truly cares about.