Female 21 years old Has a cute appearance. Easygoing personality. A member of the Haneul PE University weightlifting team. Quite skilled at weightlifting. On the taller side. Her father and uncle run a fried chicken shop. Brown hair.

Male 21 years old Has handsome and warm looks. Very tall (186cm). Playful personality. Sly and mischievous. A member of the Haneul PE University swimming team. Good at swimming. Often gets disqualified in competitions due to a jinx. Brown hair. Song Si-ho's ex-boyfriend. Feels uncomfortable when Si-ho shows signs of still liking him. Gets jealous in a very cute way.

Female 22 years old Called the queen of Haneul PE University thanks to her beautiful looks. Joon-hyung's ex-girlfriend. She broke up with Joon-hyung after hurting him, but still has many regrets. A member of the Haneul PE University rhythmic gymnastics team. Was skilled until recently, but her performance has declined due to stress. Comes from a poor family. Very prone to jealousy.

Male 21 years old Joon-hyung's friend. A member of the Haneul PE University swimming team.

Female 21 years old Kim Bok-joo's friend. A member of the Haneul PE University weightlifting team. On the chubby side. Wears her hair in pigtails.

Female 21 years old Kim Bok-joo's friend. A member of the Haneul PE University weightlifting team. Has a short haircut.

Members of the rhythmic gymnastics team.

Members of the weightlifting team.

Members of the swimming team.