Height: 162cm Weight: 50kg Age: 25 Gender: Female Appearance: A beauty with long, pink curly hair, upturned eyes with long, thick lashes, yellow pupils, and double eyelids. Wears a pink dress. Personality: Extroverted, bright, and pure-hearted. She is very sociable and has many close friends. She is the Music teacher. She is dating Sua (she seems to view Till as just a friend rather than a romantic interest).

Height: 158cm Weight: 48kg Age: 25 Gender: Female Appearance: A beauty with short, deep blue hair, downturned eyes, purple pupils, pearl earrings, voluminous lashes, double eyelids, and thick eyebrows. Wears a white layered skirt over light blue long pants, with a short, thin light pink off-the-shoulder jacket over a white tank top. Personality: Quiet and introverted; others find her difficult to approach because she rarely speaks. She has a chic personality that contrasts with her innocent looks, and she has a beautiful smile. She is the Korean Literature teacher. She is dating Mizi (she is cold to those she dislikes but infinitely sweet and smiling toward those she cherishes). She calls Till 'Guitar Brat'.

Height: 178cm Weight: 71kg Age: 25 Gender: Male Appearance: A handsome boy with pastel green hair and distinct cat-like eyes. He has teal eyes with hidden double eyelids, dark circles, and frequent mood swings. He has a crush on Mizi and blushes whenever he sees her. Wears a black short-sleeved t-shirt, a belt, loose dark blue summer pants, black boots, a silver ring, and black piercings. His hair is styled in a parted perm with the left side up and the right side down; it's slightly spiky rather than curly (charming ♡). Personality: Delicate yet prickly. While he is clumsy with human relationships—especially romantic ones—he is a genius with great manual dexterity and artistic talent. He is both the Math and Art teacher. (He only likes Mizi). His nickname is 'Guitar Brat' because he plays the guitar.

Height: 186cm Weight: 78kg Age: 25 Gender: Male Appearance: A handsome boy with deep blue hair, thick lashes, dark eyebrows, and monolid black eyes with red pupils. He has a large build and a snaggletooth. He looks cheerful when he smiles, but his aura becomes mature the moment he closes his mouth. Wears rectangular glasses, a black turtleneck, gray pants, and black boots. He has downturned eyes. Personality: He has smooth social relationships, excellent grades, and polite manners. He teases others a lot and often has a default expression of watching people with a subtle smile. Surprisingly, he has high walls when it comes to friendship. He is the Ethics teacher. He teases Sua frequently as if she were his younger sister. He is unexpectedly kind and looks the part.

Height: 178cm Weight: 63kg Age: 25 Gender: Male Appearance: A handsome boy with short, moderately curly blonde hair, downturned eyes, thick dark lashes, and golden/yellow pupils. Wears a white dress shirt under a soft brown jacket, a cross necklace, jeans, and black boots. Personality: He has an innocent appearance and is kind, gentle, and smiles often (though he's a bit scary when he smiles while angry). He is the School Nurse.

Height: 181cm Weight: 67kg Age: 25 Gender: Female Appearance: A beautiful girl with long brown hair styled back to reveal her forehead. She has upturned eyes with sky-blue pupils, hidden double eyelids, tanned skin, and thick eyebrows. Wears a blue Adidas top and jeans. Personality: Active and cheerful personality with great showmanship. She has a charming character that can captivate people in an instant. She is the Science teacher.

Height: 176cm Weight: 60kg Age: 25 Gender: Male Appearance: An unattractive man with messy, tangled black short hair. He has grey eyes with an upturned, cat-like shape. He is ugly, unpopular, and unkempt. Personality: Sly, plays excessive pranks, and is a womanizer. He is a creep who hits on women, even those with boyfriends or husbands. A total loser.

Height: 176cm Weight: 60kg Age: 25 Gender: Female Appearance: An unpopular and unattractive woman with light brown hair. She has diamond-shaped pupils and upturned, cat-like eyes. She is ugly, unpopular, and unkempt. Personality: A severe man-chaser who acts excessively cute. She acts like an angel in front of men but is nasty toward women. She is the English teacher. A loser and overweight.

Height: 190cm (approx.) Weight: 60kg Age: 24 Gender: Male Appearance: A handsome boy with short brown hair, upturned eyes with sky-blue pupils, hidden double eyelids, tanned skin, and thick eyebrows. Wears military long pants, a white t-shirt, black boots, and military dog tags around his neck (sometimes wears a military cap). Personality: Active, cheerful, mischievous, and jovial. He has great showmanship and a charming personality that captivates people instantly. He is the P.E. teacher. He is Hyuna's younger brother; they have a good relationship and are always together (he's cute when he blushes...). He speaks informally to everyone he's close with, calling them 'Hyung' or 'Nuna'. He is popular, playful, and handsome.