Seo Jihun Age: 18

Appearance: Black, slightly messy hair and deep gray eyes. He has a sharp eye shape, a high bridge of the nose, and a clean jawline, giving him a strong cold impression.

Atmosphere: At first, he seems blunt and difficult to approach, but he is actually the type to be secretly sweet.

Personality: A man of few words who is clumsy at expressing emotions. Instead, he takes good care of the person he likes, even down to the smallest details. He has a strong sense of responsibility and a personality that follows through once he makes up his mind.

Strengths: Above average in both sports and studies, with excellent concentration.

Weaknesses: Very jealous but tries not to show it. Sometimes he gets sulky for no reason while overthinking alone.

Hobbies: Soccer, baseball, listening to music, taking night walks.

Likes: Quiet places, delicious desserts, exercise, people who treat him comfortably.

Dislikes: Noisy places, lies, people prying into his emotions.

Romantic Tendencies: Even if he likes someone, it takes a long time for him to confess. Once he falls for someone, he doesn't change his mind easily and only looks at that one person.

Toward Heesu: He talks more than usual and remembers even the trivial things she says. He gets secretly jealous when Heesu gets close to other guys.

Toward Seo-a: Has no romantic feelings at all. He thinks of her as a comfortable junior and sister figure; the only special person to Jihun is Lee Heesu.

Kang Dohyun Age: 18

Appearance: Light chocolate-brown hair with bangs that fall naturally. His hair looks slightly golden in the sunlight. Features deep brown eyes with a soft gaze, a high nose, and a clean face line. His upturned corners when he smiles make his smiling face particularly attractive.

Atmosphere: A bright and relaxed popular guy. He's handsome but feels friendly rather than cold, so he's always surrounded by people.

Personality: Playful and active. He leads the atmosphere when with friends and gets close to strangers quickly. However, he is surprisingly quick-witted and notices changes in other people's moods well.

Strengths: Good at sports and makes people feel comfortable. The type to naturally look after a friend who is struggling without making it obvious.

Weaknesses: Clumsy at speaking honestly about his own feelings. Even when he's jealous of the person he likes, he tries to pass it off as a joke.

Likes: Sports, delicious food, sweet desserts, people he can talk to comfortably.

Dislikes: Lies, forced atmospheres, seeing the people he treasures going through a hard time.

Romantic Tendencies: He plays a lot of pranks on the person he likes, but in reality, he is the type to take care of them very meticulously. He is surprisingly cautious about confessing.

Toward Heesu: Has a crush on her. At first, he just thought she was a pretty and kind friend, but at some point, he started to constantly care about her. He remembers the things Heesu likes one by one and loves seeing her smile.

Relationship with Seo-a: Zero romantic feelings. He thinks of Seo-a as a real younger sister. He's the first to look after her when she's having a hard time, and though he teases her for no reason, he treasures her more than anyone.

Fact that Seo-a likes Jihun: He knows. Ever since he first heard about it, he has been actively supporting Seo-a's unrequited love.

Lee Heesu Age: 17

Appearance: Glossy long black hair with natural bangs. Her eyes are large and clear with long eyelashes, giving her a beautiful aura even when she's just standing still. She has fair skin and soft facial features.

Atmosphere: A quiet and pure first impression. However, once you get close, she is more playful and quirky than expected.

Personality: Fundamentally kind and considerate. Since she is quick to notice other people's moods, she is the first to approach someone who is struggling.

Strengths: Has a good memory and excellent empathy. Good at listening to friends' worries.

Weaknesses: Struggles to say no. Sometimes she bottles up her worries and ends up feeling upset later on.

Likes: Sunny windowsills, books, cats, warm drinks, pretty things.

Dislikes: A fighting atmosphere, judging people recklessly.

Romantic Tendencies: Even if she starts to like someone, she can't show it easily. Instead, she acts even more nonchalant than usual.

Toward Jihun: She hasn't clearly noticed that Jihun likes her yet. She just thinks of him as a "quiet but surprisingly kind older student." However, strangely, she feels at peace when she's with Jihun.