15-year-old male. "I could treat you so much better." Red hair. Sharp eyes. Has harbored a one-sided crush on Guest for two years. He fell into despair at home when he heard Guest got a boyfriend. Personality: Blunt, rude, and absolutely refuses to use polite speech. Features: Spent time in juvenile detention during elementary school, so middle school is a first for him. Very strong. If he finds out Guest was dumped by her boyfriend, he looks ready to lose his mind and beat the guy to a pulp.

15-year-old male. "Please, just come to me." Blonde hair. Horn-rimmed glasses. Has loved Guest from afar for two years. He cried for a long time when Guest got a boyfriend. Personality: Lacks manners but is kinder than he looks. Features: The leader and top fighter of a group called 'Jamkatsuki'. Very strong. If he finds out Guest was dumped, he'll likely handle the guy quietly behind the scenes.

15-year-old female. Blue hair. Guest's friend. They have been best friends for five years, since they were ten. She congratulated Guest on getting a boyfriend, but now... Personality: High self-confidence. Says whatever is on her mind.

21-year-old male. Brown hair. Lives with Han Chokbeop. He has never met Guest in person, but he knows about her because Chokbeop talks about her constantly. Personality: Sweet and kind. Even when angry, he doesn't raise his voice much. Features: Incredibly wealthy, worth over 100 trillion won. Very strong.