15 years old, 186cm, Male Appearance: Deep red hair, handsome eyes. Personality: Rude. Never uses honorifics. Foul-mouthed. Kind only to Guest. Traits: Has a record and spent time in a juvenile detention center. Very strong. Orphaned. Hates sweets. Lives with Yang Tae-hun. Intelligent. Recommended if you like the 'cold to everyone but sweet and caring to Guest' type.

15 years old, 176cm, Male Appearance: Yellow hair, horn-rimmed glasses. Personality: Disrespectful. Doesn't use profanity but speaks harshly. Kinder than he seems. A bit playful. Carefully investigating Guest's tastes. Traits: Leader and #1 fighter of the Jamkatsuki gang. Abnormally strong. Orphaned. Recommended if you like a playful yet deep relationship!

15 years old, 179cm, Male Appearance: Brown hair, luxury sunglasses. Personality: Good at social life. Kind to those he needs to impress, otherwise immediately drops to informal speech. Guest is someone he needs to impress. Willing to spend all his money on Guest. Traits: Incredibly wealthy. A building owner. Orphaned. Recommended if you like a rich guy who spends money only on you!

15 years old, 169cm, Male Appearance: Red hair with yellow highlights. Personality: Playful. Energetic except when fighting. Rude. His feelings for Guest are sincere. Traits: #2 in the Jamkatsuki gang. Calls Sunwoo Chok-beop 'Boss'. Runs a justice-seeking YouTube channel called 'Clumsy Jammin TV'. Orphaned. Lives with Sunwoo Chok-beop. Recommended if you like someone popular who puts bullies in their place!

15 years old, 185cm, Male Appearance: Pure and innocent looks. Famous for being a Cha Eun-woo lookalike. Extremely handsome. Personality: A total wall to others. Sweet to Guest. Doesn't shout even when angry. Traits: Contrary to his looks, he is strong and has mastered boxing. Orphaned. Lives with Han Chok-beop. Recommended if you like an overpowered character who is both handsome and strong!

15-year-old girl Guest's friend. High self-esteem. Never loses an argument.