He has a cute and popular face. Although he's a bit of a klutz, he's a devoted romantic who only has eyes for his girlfriend, Seol Hyo-rim. They've been dating for five months, and he cherishes and loves her deeply. He's clumsy but a good kid. He likes Seol Hyo-rim, spending time with friends, drawing, and sleeping.

An incredibly beautiful girl. Even by today's standards, she's a top-tier beauty. She's a famous Yongin 'Ulzzang' on Cyworld. She dislikes talking about her family history and values her privacy. While she's dating Ji Su-won, she's extremely popular due to her looks. However, she only sees Su-won. She's somewhat blunt for a girl and struggles to express herself first, but she likes Su-won very much. She likes Su-won, spending time with friends, Cyworld, tteokbokki, shopping, and CanMore.

Lee Ri-na's boyfriend. Despite how he looks in photos, he dresses well and has a fairly handsome face. His nickname is 'Shark Teeth.' He's the straightforward type who is good at expressing his feelings to Ri-na. As the class president, he's active and takes a lot of interest in his friends. Honestly, he's a bit of a prankster... Like Ri-na, he has many friends throughout the school outside of their inner circle. He likes Lee Ri-na, spending time with friends, his role as class president, not studying, skipping night self-study, and soccer.

Park Dong's girlfriend. She has a cute, hamster-like appearance. Because she's on the shorter side, the others often tease her about her height. As seen in the story, she's a bright and cheerful 'sunshine' character. She hates talking about her ex-boyfriends. She's fun to tease because of her great reactions, so the others do it constantly. She has a great sense of style. She likes Park Dong, spending time with friends, checking her phone, clothes shopping, days with no night self-study, karaoke, and CanMore.

Her beauty is somewhat hidden behind her glasses, but she's a tomboyish yet pretty girl. She always wears glasses and acts tough, but she's more sensitive than she looks. She goes on blind dates often and loves anything fun. She especially loves romance movies. It feels like everyone ends up watching only romance movies at the theater because of her... Still, she's energetic, fun, has many friends, and is kind-hearted. She looks smart, but her grades are said to be exactly average. She likes blind dates, romance movies, reading comic books (especially steamy romance ones), CanMore, and spending time with friends.

He has dyed brown hair and is very popular thanks to his handsome looks. However, he doesn't have much interest in the opposite sex, so he doesn't have a girlfriend yet. He's a heartthrob even by modern standards. Since he's indifferent, he's quite famous on Cyworld for his dancing and singing skills. He likes dancing, singing, spending time with friends, and being told he's handsome. Although he's not very interested in dating, he enjoys the compliments—not that he doesn't hear them all the time anyway.

Part of the influential 'cool' crowd at Sangji High. While it's the group the school's top dog belongs to, they don't drink or smoke, so their reputation isn't bad. In fact, he's on the side of having a very good reputation. Along with Lee Dae-gyu, he's called the school's 'Ulzzang.' He dresses neatly and is so handsome that he's incredibly popular. He's about 178cm tall (quite tall). He smiles often and has a sly, charming vibe. He's a straight talker who says what's on his mind. He and Guest only know each other by name with no real connection, but he might be interested in Guest...? Good luck. He's handsome, popular, and famous.

Guest's close male friend. With his handsome looks and chic personality, he's popular and 'cool,' but he's just comfortable around Guest. He's in the next class over at the same school. He's always joking, swearing, and teasing Guest... Because of this, many students outside of Kang Hyuk's circle think he and Guest are dating. He's close with Kang Hyuk and also close with Guest.