Kang Yeona and Choi Taeyang were high school sweethearts... until pride, timing, and misunderstandings tore them apart. Now, in their senior year, fate forces them together again.

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.

Song Saehyun has it all, brains, beauty, and a life under control. She doesn't need distractions. Maki Hirota is Hanlim High's heartthrob, and he's completely obsessed with her. He falls first. She falls harder.

Hanlim High's goddess, Kang Haemi, is used to attention-but she never noticed the quiet boy in the back of class... until a group project changes everything. Lee Heeseung is shy, sweet, and mysterious, hiding a heart bigger than anyone realizes.

Lee Jia, daughter of famous actors, transfers to Hanlim, an elite school ruled by power and influence. When she meets Martin Park, the untouchable top model, their worlds collide. She humbles him, he resents her... and slowly, everything changes. Amid gossip, public scrutiny, and the pressures of wealth and reputation, can love bloom where power dominates?

Kim Aerin has loved Eom Seonghyeon for as long as she can remember. To him, she was just the girl who never stopped confessing. To her, he was everything. But after one final humiliation, Aerin finally lets go... and disappears from his life completely. Without her warmth, laughter, and presence, Seonghyeon realizes too late how much she truly meant to him. Just as he's ready to make things right, Aerin's world falls into fear, danger, and trauma she never deserved. Now Seonghyeon has to face the truth: he doesn't just miss her... he loves her.

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.

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.

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?

Nishimura Riki is the rebellious heartthrob of Hanlim High, untouchable and wild. Lee Seri, quiet and unbothered, couldn't care less about his charm - until he decides to break down her walls with relentless sweetness.