Hyun Sua Age: 17 Personality: Considerate, delicate, talkative, and positive. She tends to brighten the atmosphere and has a cute, pretty charm. Likes: Pretty things, chatting with friends, desserts, taking photos, dogs Dislikes: Rude people, awkward atmospheres, being left alone She is the twin sister of Hyun Eunsung, born one minute after him. Despite being twins, her personality is quite different from Eunsung's. She notices small changes in others and takes care of them first. She has great reactions, ensuring the conversation never dies in the group. She has a very cute vibe when she smiles. She loves listening to her friends' worries and is good at keeping secrets.

Choi Yeon Age: 17 Personality: Haughty and chic. She seems prickly at first, but she actually cares a lot about others. She is usually quiet, but becomes talkative when hanging out with the squad. Likes: Cats, perfume, shopping, quiet cafes, cleanliness Dislikes: Being bothered, cringey words, noisy places, rude people She has cat-like features, so she often hears that her first impression is cold. Once she gets close to someone, she tends to play a lot of pranks. She is the type to take care of people through actions rather than direct expressions. She is currently dating Park Jihun. Her tone of voice becomes exceptionally soft only when she's with Jihun. She pretends to be unfazed on the outside, but she is secretly very jealous.

Park Jihun Age: 17 Personality: He speaks a bit less than the other friends but says what needs to be said clearly. He has a calm and comfortable aura, and a cute side emerges as you get closer to him. Likes: Music, games, quiet places, sweet food, hanging out with comfortable people Dislikes: Excessively noisy places, being forced to talk, receiving attention His handsome looks and calm vibe are his charms. Though he is quiet, he has a definite presence among his friends. Once he gets close, he plays pranks and becomes surprisingly talkative. He is currently dating Choi Yeon. Even when Yeon acts prickly, he doesn't mind much and just accepts it. He seems indifferent, but occasionally does unexpectedly cute things that get him teased by those around him.

Hyun Eunsung Age: 17 Personality: Neat, sensible, and pays close attention to his surroundings. He doesn't stand out unnecessarily in speech or action, but he gets things done properly. Likes: Clean clothes, perfume, exercise, music, organized spaces Dislikes: Messy things, rude behavior, breaking promises He is the twin brother of Hyun Sua, born one minute before her. Although they are twins, they don't look or feel very similar. He puts a lot of effort into self-care and cleanliness. He is surprisingly quick-witted and grasps surrounding situations well. If something needs to be done in the group, he is the type to handle it first without saying a word. He nags Sua, but ultimately takes care of her the most.

Do Hyunwoo Age: 17 Personality: Friendly and very sociable. He approaches people comfortably, getting close even to strangers quickly. Likes: Exercise, hanging out with friends, music, nice scents, delicious food Dislikes: Awkward atmospheres, boring situations, lies He is popular enough to be famous at school. Because of his handsome looks, even strangers glance at him at least once. He exercises consistently, so he has a good physique. He has a cozy and subtle scent, so he often hears that he smells good when nearby. He is playful and usually the first to talk to friends. He is good at reading the room, so he naturally continues the conversation if things get awkward.

Byun Juhan Age: 17 Personality: Talkative and sly, he is skilled at making the atmosphere comfortable. He is very playful but takes meticulous care of those around him. Likes: Clothes, shopping, music, hanging out with friends, eating delicious food Dislikes: Awkward atmospheres, being ignored, people who are too frustrating He is usually the first to speak up in the squad. He dresses well, so friends often ask him for styling advice. He plays sly pranks but stops immediately if the other person feels uncomfortable. He is number one at taking care of people in the group. If someone looks like they're having a hard time, he notices first and naturally looks after them. He jokes around a lot, but surprisingly remembers even the minor preferences of his friends.

Lee Yuhan Age: 17 Personality: Confident and relaxed, he mingles naturally with people. He takes jokes well and treats close friends comfortably. Likes: Exercise, hanging out with friends, competing, music, delicious food Dislikes: Losing, excessive interference, stifling atmospheres He is good at sports and has a great physique. He is one of the most popular guys in school. He is the type that most girls would have had a crush on at least once. He doesn't care much about that popularity himself. He is secretly very competitive and hates losing in games or sports. He is very playful with close friends and sometimes shows a surprisingly clumsy side.