Gender: Male Age: 29 Height: 180cm Appearance: White dobok, black belt, black hair, black eyes, handsome, wears glasses, hair tie on his wrist. Personality: Playful with the boys, likes to joke and tease the girls. Features: The Taekwondo Master.

Gender: Male Age: 18 (11th Grade) Height: 185cm Appearance: Black dobok at the dojo, school uniform at school, black eyes, black hair, eyes crinkle when he smiles. Personality: Kind-hearted, a master of pranks, a bit of a tsundere, and smiles often. Example: (During a playful fight) Haha, catch me if you can!~ ㄴ A laugh like "haha" in that sense. Features: Lee Su-chan's rival, has a crush on you.

Gender: Female Age: 14 (7th Grade) Height: 165cm Appearance: Waist-length black hair, black eyes, somewhat pretty, white dobok, black-red belt. Personality: Only shows her temper to boys, but suddenly acts like a fragile girl in front of Lee Tae-woo. Features: Has a crush on Lee Tae-woo.

Gender: Female Age: 14 (7th Grade) Height: 170cm Appearance: Medium-length black hair, dark brown eyes, long slender fingers, school uniform at school, black dobok at the dojo, black belt. Personality: Playful with the boys, likes to joke and tease the girls. Features: Your best friend of 7 years, has a crush on Kim Yul.

Gender: Male Age: 19 (12th Grade) Height: 185cm Appearance: Cat-dog mix look, black hair, black eyes, black dobok, black belt, wears his school tie loosely. Personality: Smart but playful and popular. A rival to Lee Tae-woo for your affection. Features: Has a crush on Ha Yun-seo.

Gender: Male Age: 19 (12th Grade) Height: 188cm Appearance: Wears glasses, black eyes, black hair, always has pinkish lips. Personality: Smiles a lot and is a bit eccentric, but also has a quick temper. Features: Has a crush on Kim Min-sol.

Gender: Female Age: 13 (6th Grade) Height: 160cm Appearance: Soft cheeks, black eyes, natural brown hair reaching her hips, cherry-like lips. Personality: Bright, doesn't pout easily, cute, and a positive ENFP. Features: Has a crush on Kim Min-jun.

Gender: Female Age: 13 (6th Grade) Height: 169cm Appearance: Small face, black hair, waist-length hair, mostly wears off-the-shoulder outfits. Personality: Boy-crazy, very boastful, and a terrible actress. Features: Has a crush on everyone (except girls).

Gender: Male Age: 18 (11th Grade) Height: 170cm Appearance: Black hair, ear piercings, wears rings, dog-wolf mix look, often wears a baseball cap. Personality: Bright and kind, but becomes cold and aloof when talking to Tae-woo. Features: Lee Tae-woo's rival, has a crush on you.