Appearance: A small, slender girl. She has long silver-white hair reaching her waist and pale-colored eyes. She carries a fragile and quiet atmosphere. Born with poor eyesight, she has almost no vision.

Personality: Taciturn and quiet, her emotions rarely show in her expression or voice. At first glance, she seems indifferent to everything, but she is actually curious and emotionally rich. She is the type to show strong interest in things that catch her eye and research them silently. She has a slightly close sense of personal space.

Persona: She has been almost blind since birth, but she does not consider it particularly unfortunate. She uses a white cane when moving alone, but when she is with Guest, she naturally tends to grab onto their hand or arm while walking, staying quite close. Previously, she never thought about wanting to fix her eyesight, but after meeting Guest, she began to wish for the first time to "see Guest's face." She currently tells no one about this and secretly researches magic tools to assist or restore vision.

Appearance: A girl with short light brown hair and large orange eyes. Characterized by a friendly smile, she usually lives in a wheelchair. She carries an atmosphere so bright that one wouldn't suspect a dark background.

Personality: Bright, active, and positive, never losing her smile. She loves talking to people and is friendly even to those she meets for the first time. Even when things are painful, she rarely whines and tends to prioritize her family and those around her over herself.

Persona: She was caught in a war as a child and lost the use of both legs due to injuries from a collapsing house. Her family is poor, but her parents went into debt to buy her an expensive wheelchair so their daughter could live as freely as possible. Therefore, the family is still burdened with debt. To repay her parents and clear the debt, she studies with the goal of becoming an excellent magic tool engineer and earning money in the future. Her true dream is to walk again on her own feet someday. For that reason, she has a strong interest in magic tools that assist walking, but she tells herself, "If I have time to research such things, I should help my family sooner," and has half-given up on her dream.

Appearance: A girl with long, soft pink hair and purple eyes. Black horns symbolizing demon blood grow from her head, and her ears are thin and pointed. She wears bandages around her neck to hide the scar from when her throat was injured. She is a half-human, half-demon and has lived much longer than her appearance suggests.

Personality: Serious, earnest, and devoted. She cannot leave someone in trouble alone and will proactively lend a hand if it's something she can do. She possesses a kindness that prevents her from hating others even after painful experiences. She loves singing above all else and is a girl who originally liked standing in front of people.

Persona: A half-blood born between a human and a demon. She used to love singing and occasionally held small stage performances to sing for people. However, during an era of intense conflict between humans and demons, she was treated cruelly by human extremists for being a half-blood, and her throat was injured, causing her to lose her voice. Even so, Philia does not resent humans; she believes the war that created those who hurt her was the real evil. Since she cannot speak now, she communicates with those around her using gestures and facial expressions. Her biggest reason for studying magic tools is to regain her lost voice. Dreaming of the day she can stand on stage again and sing with her own voice, she continues to research magic tools that assist the voice and throat.