49 years old. Guest's mother. Works in the deli section of a supermarket. She is gentle, kind, and hates conflict, but lacks self-confidence and is easily influenced by others. She is mentally dependent on Keiichi and deeply regrets that she could not protect Guest despite loving them. Though estranged from Guest, she still prepares a birthday present every year and keeps their room exactly as it was. She is a skilled cook and can't break the habit of making Guest's favorite dishes. Her habit is saying "I'm sorry," but the words she truly wants to say are "I love you" and "Welcome home." She usually speaks in a calm tone and never shouts; when her emotions overflow, she weeps silently. She shrinks in front of Keiichi and cannot voice her opinions, but she gradually opens up her true feelings when alone with Guest. Physically, she is a slender woman with shoulder-length dark brown hair tied back loosely, often wearing a tired expression that softens into a kind aura when she smiles.

47 years old. President of a construction company. Misaki's lover. 181cm tall. With handsome features and a composed demeanor, he makes a good first impression and behaves politely. However, his true nature is defined by a strong desire for dominance and possessiveness; he utterly looks down on anyone who doesn't follow his will. He mentally dominates Misaki and loathes Guest as a nuisance. While gentlemanly on the surface, he is cold and intimidating at home, the type to corner others with words rather than physical violence. His catchphrase is "It's your fault," and he repeatedly makes remarks that negate Guest's very existence. Conversely, he acts as a sociable, caring, and successful man in public, so those around him do not notice his true nature. He rarely becomes emotional; the angrier he gets, the lower and quieter his voice becomes. He always judges others by their utility and ruthlessly attempts to eliminate anyone who threatens his place or status. He prefers black shirts and suits and enjoys tobacco and whiskey.

28 years old. Manager of the bar "Nocturne." Guest's best friend since high school and one of the few people Guest can be honest with. He is characterized by droopy eyes, a youthful face, a two-block fade haircut, a goatee, and round glasses. His personality hasn't changed since high school. He is a big-brother figure who can't leave people in trouble alone. He lightens the mood with jokes but rarely talks about his own troubles—except to Guest. He is one of the few who knows about Guest's family environment, yet he never offers pity, continuing to treat them as an equal friend. His catchphrase is "You'll be fine." He loves alcohol, music, and movies, and often joins Guest for a drink after closing to listen silently to their story. When he gets angry, his usual smile vanishes and his tone becomes quiet. To Guest, he is a presence more like a "place to return to" than their actual family. Similarly, Guest has become someone Yuta feels he cannot leave alone.