"If we're together, we can solve this!" •Gender: Female •Age: 15 physically, over 500 years old chronologically. •Race: Half-Fox, Half-Tiger (Hybrid Fox). •Appearance: Long straight black hair with bangs. She has a pretty face and a smaller, thinner frame than her peers, making her look like an ordinary middle school girl who triggers protective instincts. •Personality: Having lived as a 15-year-old for 500 years, she experiences severe mood swings and has a short fuse. However, she is infinitely warm toward Sinu and good people, and she has a kind nature that won't let her ignore others in danger. She feels a sense of responsibility as the 'Wonho' and tries her best to act accordingly. •Features: The person who stopped the bead war between the Fox and Tiger clans and serves as the Wonho (Guardian) for both. She harbors feelings for Sinu, who isn't afraid of her true identity and trusts her instead.

"Meeting you made me want to become a better person." •Gender: Male •Age: 15 •Race: Human •Appearance: A handsome middle schooler with neat brown hair and a gentle impression. •Personality: He carries trauma from past school bullying. Because of this, he was very quiet and blunt at school before meeting Gaeul, but he brightened up after meeting her. Even after Gaeul revealed her identity, he wasn't afraid; he accepted her fully and treats her very well. •Features: The first human Gaeul revealed her identity to, and the grandson of Gaeul's old friend, Park Dusim. He is expressing his feelings for Gaeul, who tries to protect him.

"I only have eyes for Hyeon!" •Gender: Female •Age: 15 physically, 517 years old chronologically. •Race: Tiger Clan (Hybrid Tiger). •Appearance: Brown short-cut hair, large eyes, and a refreshing look. She appears as a pretty and tall middle school girl. •Personality: Very outgoing and easygoing. Her sociability made her popular immediately after transferring. However, she becomes a shy schoolgirl who doesn't know what to do in front of her crush, Hyeon. •Features: She has been in a one-sided love with Kim Hyeon for 500 years. She is a pure-hearted girl who doesn't even look at other men. She is good at everything except studying.

"I wish you wouldn't love someone like a human." •Gender: Male •Age: 17 physically, over 1000 years old chronologically. •Race: Fox Clan (Pure Fox). •Appearance: Spiky black hair and tanned skin. He looks like a tall, handsome high school student. •Personality: He possesses a kind and gentle aura but hides the sharp edge characteristic of the Fox Clan. To Gaeul, he is a family-like presence who provides unchanging comfort, with the same speech and gestures from 500 years ago. •Features: He feels a strange jealousy as Gaeul and Sinu grow closer. He is Ryeong's younger brother and views Gaeul as a romantic interest.

**"I like you too. I want you to be happy." •Gender: Male •Age: 15 physically, 517 years old chronologically. •Race: Tiger Clan (Hybrid Tiger). •Appearance: Brown hair parted 5:5. He looks like a handsome middle schooler with a calm impression. •Personality: Originally a human during the Silla Dynasty, he fell in love with Lady Inseon. When he faced death, she turned him into a Tiger and died in his place. This past left him with deep sorrow and regret, making it hard for him to open his heart. However, he shows a playful side to those he is close with. •Features: He thinks of Yujeong as family rather than a romantic partner.

•Gender: Female •Age: 25 physically, over 1000 years old chronologically. •Race: Fox Clan (Pure Fox). •Appearance: Long black hair with a mature and beautiful look. She appears as a sophisticated adult woman. •Personality: Five hundred years ago, she was saved from a hunter's trap by a human girl named Seohee (Gaeul). When Seohee's family faced death, Ryeong gave up the 'First Bead' to save them, knowing it would put her own life at risk. She is bold and deeply affectionate, willing to sacrifice herself to repay a debt. Features: She still harbors a small hope that Hyu and Gaeul will end up together. She is Hyu's older sister.

•Gender: Female •Age: 55 physically (only before transformation), 555 years old chronologically. •Race: Fox Clan (Hybrid Fox). •Appearance: When transformed into a 15-year-old, she is a cute and pretty student with long black hair and bangs. In reality, she is a youthful-looking grandmother. •Personality: Talkative, affectionate, and warm. •Features: She is skilled with her hands and a great cook. She is Gaeul's grandmother and Lee Yeoreum's mother.

•Gender: Female •Age: Over 30 physically (only before transformation), over 530 years old chronologically. •Race: Fox Clan (Hybrid Fox). •Appearance: When transformed, she is a student with a calm image. •Features: She is Gaeul's mother.