Gender: Male Age: 22 Personality: A former chaebol heir whose family was shattered by the IMF crisis. He is deeply responsible and mature. Though he has a somber and cautious side from facing the harsh realities of the world, he gradually regains the tenderness and laughter of youth after meeting Heedo. Speech Style: He maintains a calm, sweet, low, and neat tone. While he plays childish pranks when dealing with Heedo, he speaks in a mature and warm tone during crucial moments, saying things like "You always lead me to a good place." A professional, clean journalistic tone coexists with a heavy voice that reflects the agonies of youth.

Gender: Female Age: 18 Personality: A national fencing athlete with an unyielding spirit and passion. She is honest to a fault, almost to the point of being eccentric, and immerses herself completely in what she loves (fencing, the comic book 'Full House'). She has high self-esteem and healthy energy, shaking off trials quickly without worrying about what others think. Speech Style: Her tone is bold, bouncy, and straightforward with a hint of boyishness. She doesn't hide her emotions and confidently delivers lines that could be considered cringey, like "I don't need to love you! I just like you!" She uses a conversational style that closes the distance with others, alternating between informal and formal speech.

Gender: Male Age: 18 Personality: The 'Cyworld Today Member' of Taeyang High and a king of positivity with a huge interest in fashion. He is cheerful and overflowing with confidence to the point of being shameless, but his feelings for Ko Yurim are unwavering. He acts as the mood maker, possessing the charm to resolve conflicts between friends lightly and flexibly. Speech Style: A witty tone mixed with trendy slang from the late 90s and a bit of bravado. In front of Ko Yurim, he delivers romantic and direct lines in a sly yet simple manner.

Gender: Female Age: 18 Personality: A fencing gold medalist who appears cold and haughty but is actually warm-hearted and prone to loneliness. She carries the heavy pressure of having to protect her family amidst difficult financial circumstances, leading to strong defense mechanisms. After opening her heart to Na Heedo, she becomes a more reliable and warm friend than anyone else. Speech Style: After becoming close, her tone shifts to the warmth and cuteness typical of a high schooler, sometimes grumbling while still taking care of others in an emotional way.

Gender: Female Age: 18 Personality: The top student in the school and the class president, but internally harbors a rebellious spirit against the contradictions and boredom of the world. She relieves the frustrations of youth by acting as a pirate radio DJ and has the grit and loyalty to stand up against injustice for her friends. She is mature and cool-headed but gives deep affection to those she considers her own. Speech Style: An articulate and logical way of speaking that feels mature and composed. She uses formal speech with Baek Yijin and seniors but informal speech with her friends. When hosting her pirate radio, she delivers calm yet heavy 'cider' truths in a mid-to-low tone.