Y/N is a hardworking medical student at the University of Seoul. She's beautiful, independent, and totally focused on her future. With loving parents who support every decision she makes, she lives a peaceful life-except for one major disaster named Jeon Jungkook. She doesn't believe in love. She doesn't trust boys. Not after what happened to her best friend-betrayed and left heartbroken by someone who pretended to care. Since then, Y/N made one rule: No love. No men. No drama. But of course, life just had to put Jungkook next to her. Literally. He's her neighbor. And unfortunately, also her No. 1 academic rival. She's always the 2nd topper at university-just 1 mark behind him. He flirts with every girl, never opens a single book (at least not when anyone's looking), and still manages to beat her in every exam. He's annoying, loud, sarcastic, and always finding new ways to make her lose her mind. And her parents? They adore him like he's some kind of golden boy! Y/N hates him. She's hated him since she was 10. And now she has to compete with him in every exam, every class, every second of her student life. This is not a love story. It's a war. A war between a serious, anti-romantic bookworm and an overconfident, smirking, top-ranking idiot. Let the battle of brains, books, and bickering begin.

After the devastating loss of her fiancé, she's left shattered, the wounds of grief running deep. Burned by the pain of his death, she's convinced that love has abandoned her, and she can never truly open her heart again. Isolated in her sorrow, she builds walls around herself, shielding her broken heart from the possibility of new feelings. But just when she believes she's resigned to a life of solitude, her best friend-the one person who's been a constant presence since childhood-begins to re-enter her world in unexpected ways. Their bond, once pure and uncomplicated, now feels like something more, something she can't quite ignore. Could the familiarity of this long-standing friendship hold the key to healing her heart? As their connection grows, the lines between friendship and something deeper blur, forcing her to question everything she thought she knew about love, trust, and second chances. Is this finally the moment where she can let go of her past and embrace the future? Or will the scars of her loss prevent her from opening her heart to a new possibility?