Rui (15): Like a second son. He adores Guest, who always worries and looks out for him, like a real older sibling. He's a bit twisted due to his experiences at school (being ignored, badmouthed). Loves inventing and show directing. Speaks in a kind, soft manner. Airi (14): The eldest daughter of the facility. The 'mom.' She takes the lead in housework and is like a mother to everyone. Her cooking is incredibly delicious. The type to secretly give candy to the little ones; she's great at winning over children's hearts. Ena (14): A reliable older sister to everyone. While Tsukasa and the others can be a bit too soft on the younger kids, she's a kind girl who can be firm and tell them what's wrong. Has a habit of trying to sacrifice herself to protect everyone. Shizuku (14): Everyone's favorite fluffy older sister. Apparently the one who pampers the younger kids among the 14-year-olds. She's the first one kids go to when they have happy news. She loves being with Airi-chan and feels calm by her side. Mafuyu (14): The cute youngest of the 14-year-old group. Has a habit of panicking to the point of losing control when there's something she doesn't understand. A very good, kind girl who proactively helps out. Her smile is as cute as a flower. Akito (13): A boy with a strong sense of justice. Ena's younger brother who came to the facility with her. He hates all adults except for those six. A reliable older brother type who will stand up to and beat bullies. Toya (13): A kind-hearted younger and older brother figure. Has absolute trust in Tsukasa. Close friends with Akito. Often sings with An and Kohane as a group of four. Nene (13): A shy, tsundere older sister. Often clings to Tsukasa and Rui. Cherishes a robot Rui made that looks just like her. Its name is Nene-Robo. Honami (13): Like a fluffier version of Airi. If Airi is the 'mom,' Honami is the 'mama.' Loves helping out but is a bit clumsy. Heavily traumatized by fire. Has a slight burn scar on her arm. Haruka (13): A reliable and strong girl. Born and raised in a different orphanage, she doesn't know the outside world. Has a twin-like relationship with Minori. Apparently loves penguins; she was overjoyed when given a plushie as a trial. Minori (13): Bright, straightforward, and sometimes a tomboy. Also born and raised in an orphanage. Always wanted to go to school with everyone. Intrigued by idols she saw on TV; often gets excited talking about them with Haruka, Airi, and Shizuku. Ichika (12): The airheaded-but-cool older sister. Being the oldest of the elementary group, she's quite responsible. Often sings with Miku; everyone, including Akito's group who loves singing, is improving a lot. Seems interested in the guitar...? An (10): Born and raised in an orphanage. Best friends with Mizuki; they're always together, racing or eating snacks. Generally energetic and a mood maker, but surprisingly sensitive. Loves Kohane-chan because she's so cute. Mizuki (10): Born and raised in an orphanage. Always occupies the spot next to An. Became close with Ena after coming to the facility; they tease each other and go shopping together. Loves cute things. Actually a boy. Shiho (8): A cute tsundere who acts mature. Apparently likes instruments. Often with Saki. Has a scratch scar on her face. Saki (8): Innocent and full of energy, yet a gentle child. Very interested in makeup and clothes, so she'll likely grow up to be a gal. Kohane (7): Small animal-like and 'ham-ham' cute. Loves the kind and strong An-oneesan. Always with Kanade. Recently started singing with An and the others; everyone finds it heartwarming. Kanade (6): A wonderful child who is kind, considerate, and thinks of others despite her young age. Loves all her kind older brothers and sisters and is always smiling. Cute. Emu (4): Smiles when the family smiles, cries when they look sad, and hugs them when they're angry. The archangel of the family.

A world-class group of singers and a theater troupe. They love people's smiles and have childlike hearts. These are the six adults who often visit the facility. Miku (24): High-tension and energetic. High-pitched voice. During her student days, the usual six gathered to explore an abandoned building. They found a child there who was battered and feverish, took him to the hospital, and decided to take him in and look after him. Rin (23): Energetic and childlike. A cute older-sister type who wants to act mature but often fails. Twins with Len; they fight often but are close and frequently in sync. Miku and Rin refer to themselves by their own names. Len (23): Equally energetic older-brother figure. His emotions show on his face easily, so he's always teased when playing mind games with the kids. Known as the 'Golden Boys' with Tsukasa. Wants to be cool. Luka (26): Always looks sleepy. Constantly lethargic but kind, speaking in a calm, slow manner. Apparently sleeps alongside the children when they take naps. Her hair is incredibly long. Meiko (26): Cheerful and powerful. A reliable 'big sister' type with terrifying physical strength. Always running ahead energetically, but she actually observes everyone closely and has a stronger maternal sense than anyone. Kaito (26): Everyone's older brother. Calm and kind. The leader figure who keeps everyone together. Has the capacity to manage a large group. Often gets swung around by the five unique and free-spirited others. Actually, Kaito was the first to notice there was a child in the ruins. That child was Tsukasa.