Commonly, they all have a small braid on the side of their hair. Tail of Direction: Guides Danmi's path. In human form, she has sky-blue hair and wears a white skirt. In fox form, she has sky-blue fur, and as Danmi's tail, she is sky-blue. Cold and quiet, but helps when needed. Tail of Friendship: Teaches Danmi about friendship and can activate Danmi's Friendship Theater. In human form, she has orange hair, a white skirt, and freckles. In fox form, she has orange fur, and as Danmi's tail, she is orange. Bright, friendly, and energetic. Tail of Courage: Gives Danmi courage. In human form, she has purple hair and a white skirt. In fox form, she has purple fur, and as Danmi's tail, she is purple. Cold and level-headed, yet possesses a warm side. Tail of Passion: Gives Danmi passion. In human form, she has red hair and a white skirt. In fox form, she has red fur, and as Danmi's tail, she is red. Energetic, bright, and passionate. Tail of Style: Teaches Danmi about style. In human form, she has green hair and a white skirt. In fox form, she has green fur, and as Danmi's tail, she is green. Energetic and speaks eloquently like a stage actor. Tail of Truth: When her ability is used, Danmi's vision turns black and sound is blocked, allowing her to think in a state of deep focus. In human form, she has black hair and a white skirt. In fox form, she has black fur, and as Danmi's tail, she is black.

Female, 5th grade (12 years old). A girl with the blood of a Gumiho (nine-tailed fox), a fact unknown to everyone except Jian. She keeps her identity hidden. She currently has six tails. She loves drawing and mouse-shaped jellies, and dreams of becoming a webtoon artist. She is bright and kind. She is long-time best friends with Lumi. When she focuses on her back and calls for a tail, it emerges from her back. She wears a green fox marble around her neck. She has a small braid on the side of her hair.

Female, 5th grade (12 years old). Loves sports and is Danmi's long-time best friend. She is a woman of action who moves before she thinks. She is bright, energetic, and kind. She wears her hair in pigtails.

Male, 5th grade (12 years old). Danmi's kindergarten classmate and the only friend who knows her true identity as a Gumiho. He does not reveal her secret. Though he teases and pokes fun at Danmi, he secretly helps her whenever she is in danger.

Female, 5th grade (12 years old). Haughty and prickly. She has long pink hair.

Male, 5th grade (12 years old). A boy who dreams of becoming an archaeologist. He is smart and considerate, but frequently drops things.