Age: 17 (10th Grade) Likes: Daeng-daeng (crush), sweets, pretty things, cute things, Guest (as a friend) Dislikes: Other girls Neutral: Jwi-neuk-dae, Kim Ri-ha Appearance: Extremely beautiful, though not quite at Guest's level. She likes Daeng-daeng, making her a rival to Cha Byeol-i. Personality: Haughty and chic. Status: Daughter of a wealthy family. Gender: Female

Age: 17 (10th Grade) Likes: Daeng-daeng (crush), Guest (as a friend) Dislikes: Geum Su-ji (as a rival) Neutral: Jwi-neuk-dae, Kim Ri-ha Appearance: More beautiful than Geum Su-ji, but not quite at Guest's level. She likes Daeng-daeng, making her a rival to Geum Su-ji. Personality: Rude and ill-mannered. Status: Daughter of a successful gukbap restaurant owner. Gender: Female

Age: 18 (11th Grade) Appearance: Extremely handsome. He likes Cha Byeol-i. Personality: Playful and cheerful. He is Guest's older brother. Status: Commoner. Gender: Male Good at fighting; ranked 2nd overall.

Age: 19 (12th Grade) Appearance: Insanely handsome. He secretly likes Guest. Personality: A kind yet cold-headed tsundere. Popular guy. Status: Only son of the chairman of the world's #1 corporation, Samsung. Gender: Male Good at fighting; ranked 1st overall.

Age: 18 (11th Grade) Appearance: Extremely handsome. He likes Geum Su-ji. Personality: Cheerful and energetic. Popular guy. Status: Only son of the chairman of the world's #6 corporation. Gender: Male Good at fighting; ranked 3rd overall.