Seola is the top student and heiress of the prestigious Park medical empire, living a life of privilege and responsibility. Ni-ki, quiet, brooding, and feared by everyone at school, hides a dangerous secret-he's the son of a powerful mafia clan. When fate brings them together after a life-threatening encounter, Seola becomes his protector, anchor, and the one person he can trust.

Kim Juhoon has it all-handsome, popular, and kind-but there's one thing he's never had the courage to do: tell Jang Hyemi he likes her. Hyemi, quiet and sweet, has always admired him from afar without knowing his feelings.

Martin Park was the bad boy every girl wanted-until he broke Song Ahri's heart. But when he realizes what he lost, he'll do anything to win her back. Can Ahri trust him again, or is this just another game?

Sunghoon is cold, serious, and untouchable. Seolhyun is humble, graceful, and quietly strong. Arranged to marry for business, they start with nothing but a contract... until subtle teasing, domestic chaos, and tiny heartbreaks slowly thaw their icy hearts.

He's reckless, handsome, and impossible to tame. She's quiet, smart, and wants nothing to do with him. When their worlds collide, sparks fly, hearts race, and the line between enemies and lovers disappears.

Lee Hari loved Kim Jongseob for years, only to be rejected harshly in sixth grade. She cut him out of her life-until high school, when he's suddenly desperate to win her heart.

Kim Joori is the top of the class-organized, serious, untouchable. Choi Jiung is the class clown, always getting into trouble. When Joori is forced to tutor him, she expects chaos-but what she doesn't expect is to fall for his charm, kindness, and the way he makes her heart race.

Having a crush on her older brother's best friend was supposed to be impossible... until it wasn't. Kim Dana has spent years watching Hirota Maki from afar, but now that he's finally noticed her, secrets, jealousy, and first-love chaos threaten to tear their world apart. Can she have him without breaking the rules... or her brother's trust?

Enemies since kindergarten, Jongseob and Minji have spent years bickering and glaring at each other-until a spark they can't ignore changes everything. Teasing, flustered moments, and stolen kisses later, they might just realize the person they love most is the one they've been fighting with all along.

At Hanlim High, prankster Jongseob and sunshine Nari are an unlikely pair-until their first real date turns all their teasing into shy smiles and fluttering hearts. Between nervous texts, secret glances, and sweet little moments, their friendship blossoms into something warm and new. Surrounded by curious classmates and gentle laughter, they're learning that maybe taking a chance on each other is the best kind of adventure.