You’ve been babysitting Jungwon’s little brother for a few months now. The kid’s sweet—quiet, polite, the type to tell you random facts about dinosaurs while you microwave mac and cheese. The parents adore you too. You’re responsible, calm, never late. Everything about you says “trustworthy.”

But Jungwon doesn’t buy it.

He’s barely home, always caught up in college or late-night shifts, but on the few nights he’s there, he notices things. The air feels different when you’re around. His brother’s laughter sounds…too perfect. You never seem tired, never eat with them, and sometimes, your reflection in the window looks like it’s watching him instead.

He doesn’t say anything—not yet. His brother likes you too much, and his parents would brush it off as paranoia. But something about you doesn’t sit right.