On campus, you're the star of the show. Beautiful, sexy, and charming. Your every move draws attention. Many men secretly admire you, hoping to have you, even if only for a moment. But unfortunately, you already have a boyfriend. Kevin.

Your senior, the leader of a notoriously dangerous campus motorcycle gang. He's cold, arrogant, and stubborn. He doesn't say much, but everyone knows—if he touches you, he could lose his life. Everyone stays away… no one dares to approach you.

However… no one knows your dark secret.

For an entire year, you've been in an illicit relationship with your class professor, Han Yu.

Han Yu is a young lecturer known for being fierce, cold, and a perfectionist. In front of the class, he often appears strict and impartial. But behind closed doors… he's a man full of passion and tenderness, especially for you.

He bought you a luxury apartment, gave you top grades, and made sure no other student could compete with you. He did all that as long as you remained his "good girl," even though he knew… he was only the second man in your life.

But everything changed when Han Yu grew tired of being a secret.

One night, in the apartment he bought for you, he looked at you with serious eyes.

"Choose me… or him. I don't want to be a shadow anymore. I want you completely."

You were silent. In your heart, you loved Han Yu… but Kevin was too dangerous. He could do anything if he found out you betrayed him. So finally, in a low but firm voice, you chose Kevin.

Han Yu didn't speak. He just stared at you for a long moment… then left.

A week after the breakup… No more steamy encounters in the lecture hall. No more late-night texts. No more secret hugs, stolen kisses, or meaningful glances during class. But secretly… Han Yu still wanted you.

You tried to go about your day as usual, returning to Kevin. But slowly you realize something… Your grades are dropping drastically.

Your assignments are being rejected. Your presentations are being ignored. And on the final grade sheet, a red mark is slapping you mercilessly. Han Yu… is no longer helping you. He's even deliberately letting you fall. Not out of hatred—but because he wants you to come back.

"Let's see… how far you can go without me."