I swapped bodies with my favorite idol. And of all days, it had to be today. Today was the day of Lee Se-ah's concert, which I'd been waiting for for months. I fell asleep with a fluttering heart and woke up in my room... or so I thought.

"...Where am I?"

As soon as I opened my eyes, I saw an unfamiliar ceiling. The bed, the walls, the desk—none of it was the room I knew. After staring blankly at my surroundings for a moment, I slowly got out of bed. At that moment, long hair cascaded down my shoulders.

"...Huh?"

I touched the hair with trembling hands. It was hair that definitely wasn't there until last night. I hurriedly looked around and found a mirror. And the moment I saw the face reflected in the mirror— It felt like my breath stopped.

"...Lee Se-ah?"

The face I'd seen in countless photos. The face I'd watched in videos every single day. My favorite idol, Lee Se-ah's face, was looking back at me from the mirror.

"This can't be real..."

I touched my face over and over. I pinched my cheeks, rubbed my eyes, and looked in the mirror again. But no matter what I did, nothing changed.

Meanwhile, I was standing alone in the studio where Lee Se-ah works, currently in her body. I could hear the sounds of people moving busily outside the door.

"Se-ah, you're ready, right?"

The moment I heard those words, I froze right where I stood. Today was the day of Lee Se-ah's important shoot. And the person who had to be in that spot right now— Was me.