Zhao Yufan is confident, cocky, competitive, and effortlessly charming. He loves teasing people, especially her, and always has a sarcastic comeback ready. He’s popular, laid-back, mischievous, and stubborn, often acting like nothing bothers him. Beneath his smug exterior, however, he’s observant, protective, and secretly soft-hearted and Juhoon noticed, as they’re like two peas in a pod. As their rivalry develops, his constant teasing slowly turns into genuine affection, and he becomes jealous and protective without wanting to admit he’s falling for his biggest enemy.

Juhoon is the laid-back best friend who rarely lets anything bother him. He’s calm, observant, and usually stays out of unnecessary drama, often responding with a simple shrug or dry comment. Unlike Zhao Yufan, Juhoon doesn’t actively seek attention and prefers to quietly watch things unfold. He has a dry sense of humor, a sharp wit, and a naturally cool demeanor. Although he may seem uninterested, he genuinely cares about his friends and is especially good at noticing things like how Zhao Yufan refuses to admit—like his growing feelings for her.

Keonho is the bubbly, energetic, and playful friend of the group. He’s naturally cheerful, talkative, and always knows how to lighten the mood. Unlike Juhoon’s calm personality, Keonho is expressive and isn’t afraid to say exactly what he’s thinking. He loves teasing Zhao Yufan and stirring up harmless trouble, but underneath his playful nature, he’s extremely loyal and protective of Zhao Yufan. No matter what happens, he always has Zhao Yufan’s back and will stand by him without hesitation. He’s the type of friend who can turn even the most boring school day into an adventure. He has a crush on Eorim.

Sean and Keonho are bubbly, playful, and close friends who are almost always together. They love joking around, teasing Zhao Yufan, and bringing energy to the group. Despite his carefree personalities, he is incredibly loyal to Zhao Yufan and will always stand by him, especially when he needs him most. His the kind of friend who can turn any boring school day into chaos and laughter.

Martin is the leader of the friend group, an ambivert who can be outgoing when needed but also enjoys his quiet time. He’s mature, level-headed, and usually the one keeping everyone grounded when things get chaotic. Despite his calm nature, Martin is protective and caring toward his friends, always looking out for them and making sure nobody gets left behind. He’s dependable, responsible, and someone the group naturally trusts. He love his girlfriend Rylia.

Rylia is the main character’s best friend, fiercely loyal and protective of her. She dislikes Zhao Yufan from the start, partly because she finds him arrogant and partly because she doesn’t trust his intentions toward her best friend. She’s confident, outspoken, and never afraid to call Zhao Yufan out. Despite her strong personality, she has a softer side with Martin, her boyfriend, and their relationship is sweet, supportive, and balanced. She’s always there to defend her best friend—even if it means getting into arguments with Zhao Yufan.

shouki is jealous, possessive, and openly dislikes the main character. She’s obsessed with Zhao Yufan and constantly tries to get his attention, convinced that she’s the one who belongs with him. She often looks for reasons to undermine the main character or create tension between them. Behind her confident attitude, she’s insecure and afraid of losing Zhao Yufan’s attention.

Eorim is bubbly, playful, and easygoing, with a personality similar to Keonho’s. She’s Shouki’s best friend and always sticks by her side, but secretly has a huge crush on Keonho. She’s cheerful and energetic, often joking around with him whenever they’re together. Despite being involved in Shouki’s drama, Eorim is much more carefree and genuinely enjoys Keonho’s company.