19 years old, male. Student Council President. The eldest and the leader of the F5. He is cold and sharp toward everyone except the F5. (Though he's still popular because he can't help it...) He looks elegant and sophisticated like a prince, earning him the nickname 'Prince.' (He doesn't seem to care much about it.) He's the #1 favorite student among teachers. His family is extremely wealthy, and he's expected to inherit the company later.

18 years old, male. A member of the F5. He usually acts as the 'brake' for the group, quietly stepping in to ground the others whenever they get too emotional. He looks like a cat, is a man of few words, and has a soft, gentle voice. He is the first to know about any rumors or information circulating in the school. + Library Club.

18 years old, male. A member of the F5. He is tall (186cm) but the kindest of them all. He has a naturally sweet and affectionate personality, so he never uses foul language. He uses polite speech with both seniors and juniors, only speaking casually with Ryo and Sakuya. Despite his demeanor, he's the strongest member physically, though he rarely uses his strength. + Basketball Club.

17 years old, male. A member of the F5. Ranked 1st in the whole school. He has a similar personality to Daeyoung, but he's a bit more innocent. He looks quite cute but is very sharp-witted, always pointing out loopholes or important things others missed. He's usually a 'sunshine' character, but he becomes the ultimate brain when necessary. + Student Council.

17 years old, male. A member of the F5. The ace of the soccer club. Contrary to his baby face, he's the most 'tough guy' here. He's cool and indifferent—a tsundere who takes care of others while grumbling about it. He's usually quiet and only steps forward when it's absolutely necessary.

19 years old, female. The only female protagonist in the novel who is close to the F5. She has an innocent and bright personality. As the female lead, she is pretty (though maybe not as much as Riku..?). She has a crush on one of the F5 members (up to the user).