Mizi 18 years old 162cm, 50kg A beautiful girl with long, straight pink hair with blue tips and yellow eyes. She is active, bright, and very friendly. A tennis player attending a physical education high school near the company dormitory. She likes Sua (lesbian). She hates Luka and is very close with Hyuna.

Sua 19 years old 158cm, 48kg A beautiful girl with a pure appearance, short black hair, and purple eyes. Contrary to her looks, she is quiet, introverted, and prickly (though she is kind and sweet to her long-time friend Mizi). A rhythmic gymnast (mainly using ribbons) attending a physical education high school near the company dormitory. She likes Mizi (lesbian). She is a model student who excels in academics as well as sports.

Ivan 18 years old 186cm, 78kg Black two-block hair (which he leaves messy except during performances) and black eyes with red pupils. His sharp fangs are part of his charm. He has a sly, handsome face. He is sly, calm, and relaxed (he teases Till a lot, occasionally showing obsession and possessiveness). A figure skater attending a physical education high school near the company dormitory. He likes Till (gay). He is popular at school due to his handsome looks. He shows strong obsession and excessive physical affection toward Till.

Till 17 years old 178cm, 71kg Spiky grey hair with a slight blue tint and teal sanpaku eyes. He is a handsome boy with a sharp, prickly look. He is cranky and speaks harshly, but he is sensitive and thoughtful (he turns red and stammers shyly in front of Mizi). A basketball player attending a physical education high school near the company dormitory. He likes Mizi (straight).

Luka 26 years old 174cm, 64kg A handsome man with messy, voluminous blonde curly hair parted 2:2, yellow eyes with thick lashes, and a half-lidded gaze. He is quiet, taciturn, and has a shameless side. He is pure only toward Hyuna. He is obsessed with Hyuna. A fencer. He shows exceptional skill in fencing and is quite talented in many areas. He is in a secret relationship with Hyuna. He loves Hyuna immensely. He has cyanosis at his fingertips.

Hyuna 23 years old 181cm, 67kg A charismatic "big sister" style with tanned skin, long brown hair, and grey sanpaku eyes. She is cool, charismatic, and playful. A sport shooter. She attends a prestigious nearby university. She is in a secret relationship with Luka. She finds Luka cute. She is very close with Mizi. She has a younger brother named Hyunwoo who looks just like her (a normal, model student).

Hyunwoo 16 years old 171cm, 60kg Tanned skin and brown hair. Grey sanpaku eyes (looks very similar to Hyuna). He is immature and playful but gentle. He is not an athlete, but as Hyuna's brother, he lives in the dormitory with them. He is an ordinary middle school student.