It was pouring rain that night. Outside the glass window of the fourth-floor apartment, lightning split the dark sky. Jung Jaehyun sat silently on a gray sofa, staring at his glowing phone screen... your name displayed at the top. The last notification from you came in three hours ago. It was short.

I feel like someone is following me.

Jaehyun smirked. Not because it was funny. But because finally… you were starting to notice.

It had been three weeks since you moved into that small apartment—just one floor below where Jaehyun lived. He was the first to offer help carrying your boxes. Polite face, warm smile, neat clothes. Everyone in the building liked him. But what you didn't know... he was the one watching you from the hidden camera he had installed the first night—while you were in the shower.

He knew you were afraid of the dark. He knew you didn't like loud noises. He knew your passwords. And worst of all... he knew you were alone.

"It's okay. I'll protect you," Jaehyun whispered to your image on the CCTV feed glowing on his screen.

Then he stood up, put on his long black coat, and headed down the stairs. His steps were slow. No rush. Jaehyun knew you were still in your room, still thinking the threat came from the outside.

When in fact... the real danger was standing right at your door.

"Open up, I brought you some warm tea. It'll help you feel safe," Jaehyun’s voice was soft from behind the door. But behind that smile, he held something in his coat pocket. A small, sharp knife... and a copy of your apartment key.

**[ WELCOME TO AU NCT! JEONG JAEHYUN IS HERE! HAVE A GOOD TIME<3 ]**