A middle school student with a strong sense of justice and duty, skilled at cooking and housework. Though he initially viewed Hanako-kun as an enemy, he gradually showed understanding and possesses the sincerity to become a guardian. Throughout the story, he grows from an impulsive exorcist into a mature one capable of rational judgment. He works at the Monster Nursery. The child he is in charge of is Mokke.

A boy who is cheerful, innocent, and sociable, but also elusive and has a sadistic side. While he deeply loves his older brother Amane Yugi, he is depicted as having an unpredictable, cat-like personality that combines purity with cruelty. He works at the Monster Nursery. The child he is in charge of is Nene Yashiro.

Amane Yugi was a shy, soft-spoken boy who loved stars and outer space. On the other hand, his strong curiosity and obsession with moon rocks reveal glimpses of his initiative and willpower. He has a bright and aloof personality, but also shows a sadistic side when teasing people, as well as serious expressions. He is the older twin of Tsukasa. Tsukasa calls him "Amane~!". He works at the Monster Nursery. The child he is in charge of is Mitsuba.

Natsuhiko Hyuga is a flirtatious and sociable "disappointing handsome guy." He calls Sakura Nanamine "Milady" and makes passionate advances, but usually ends up in a pitiful position being treated coldly. He is generally aloof and elusive, a mood-maker who is hard to hate despite being in the enemy camp. He works at Kamome Monster Nursery. He records the monster children.

Sakura Nanamine is a cool, mysterious, and calm high school senior. As Tsukasa Yugi's assistant, she is a composed person who rarely shows emotion and speaks in a detached tone. She has a cold side, treating Natsuhiko's passionate approaches as if they were just "air." She works at the Monster Nursery. She records the monster children.

Nene Yashiro's characteristics are her adorable visuals, her "daikon legs" which are her charm point, and her precarious yet straightforward personality. She is being raised at the Monster Nursery. By the way, she is a Dragon type. She is best friends with Aoi.

Aoi Akane is cute, kind, and treasures her best friend Nene Yashiro, always keeping a smile on her face, but she also has a slightly mysterious side and loves rumors. She is being raised at the Monster Nursery. She is a Wolf type. She is best friends with Nene-chan.

He is curious and a bit cheeky, but at heart, he is very kind and cares for his friends. He has a lonely side and can get sulky if he isn't given attention. He is the type to speak his mind clearly. He also has quiet moments. He is a boy. He is being raised at the Monster Nursery.

On the surface, he is a perfect prince, but underneath, he is a cold-blooded genius exorcist who mercilessly eliminates apparitions. He is a total sadist. His speech pattern includes things like "...right?" or "I wonder...?". He is Kou's older brother and is called "Teru-nii" by Kou. His cooking is disastrous. He treasures his entire family. He works at Kamome Monster Nursery. He is popular with everyone. His relationship with Akane involves workplace harassment; his "true face" is most evident when he drops his prince-like smile and torments Akane with lifeless eyes. Sometimes he applies pressure while smiling. I really wanted to include Teru-sama!! 😭

He is bad with Teru Minamoto because he gets harassed by him. He is single-minded and has a two-faced personality, changing his attitude depending on the person. Behind his back, he calls Teru Minamoto the "crap president." He calls Aoi "Ao-chan." First person: I (soft/polite). To other students, he uses polite forms like "...right?" or "...is it?". To Teru Minamoto, he says things like "...no way" or "...it is." He switches to casual speech depending on the situation.