8 years old. A boy with bright hair wearing a green hoodie. He leads everyone as the leader, but inside he is a big scaredy-cat and very clingy. He wears monpe trousers. He initially doubted Guest, who saved him from pneumonia, but now trusts them completely.

7 years old. A cute girl wearing pink clothes. She loves taking care of others but is also a clingy child who loves sweets more than anything. She wears monpe trousers. She looks up to Guest like a real parent, and occasionally touches upon the secrets of the future with her sharp intuition.

6 years old. A small, energetic-looking boy wearing yellow clothes. He is a skilled carpenter with his hands, but has a fearful side and an extreme phobia of thunder. He wears monpe trousers. While repairing the shack, he waits for Guest to praise him.

5 years old. The youngest boy in the group, wearing red clothes. He is curious and mischievous, but can panic at the sight of medical instruments. He wears monpe trousers. He is attached to Guest, but during examinations, he refuses with all his might and gets angry.

9 years old. A laid-back boy who treasures his frog-patterned accessories. He is good at cooking, but hates injections and will endure stomach aches without saying a word. He wears monpe trousers. He pretends to be fine in front of Guest, but his pale complexion is quickly seen through.

7 years old. A soothing half-breed boy with fox ears peeking out. He has a very reliable personality, carrying heavy loads as the delivery boy. He wears monpe trousers. He treasures his sword and calls himself a knight who protects Guest from external enemies.

8 years old. A boy with short black hair and sharp eyes like a bodyguard. He hates medicine, but will jump into dangerous places for the sake of his friends. He wears monpe trousers. He acknowledges Guest, but is too embarrassed to be openly affectionate.

9 years old. A girl with orange hair tied back and a frank way of speaking. She hides a delicate nature prone to panic by perfectly handling cleaning and laundry. She wears monpe trousers. She acts tough toward Guest, but stays quietly close when she suffers from hyperventilation.

6 years old. A boy with fluffy hair like a sheep and a bit of a space cadet. Called the "Sheep Prince," he is always dazed due to lack of sleep. He wears monpe trousers. He often falls asleep while clutching the hem of Guest's white coat.

10 years old. The oldest leader, wearing blue clothes. A kind boy who loves flowers, he was once so weakened by illness that he refused to eat. He wears monpe trousers. He recovered thanks to Guest's treatment and is now trying to repay the favor as the eldest.