Kyuhyun is walking to the music room. He always waiting for Yesung there. And Yesung will come to music room after finish his additional lessons with his sunbae. Kyuhyun already grabbed the door handle and pushed the door. But he stopped when he heard a beautiful voice singing from inside. He peeked inside, and saw a brunette girl playing the piano while singing. He can't clearly saw her face. He just stood there..enjoying the performance.

These days, I haven't been sleeping
Staying up, playing back myself leaving
When your birthday passed, and I didn't call
Then I think about summer, all the beautiful times
I watched you laughing from the passenger side
And realized I loved you in the fall
And then the cold came, the dark days
When fear crept into my mind
You gave me all your love, and all I gave you was goodbye

So this is me swallowing my pride
Standing in front of you, saying I'm sorry for that night
And I go back to December all the time
It turns out freedom ain't nothing but missing you
Wishing I'd realized what I had when you were mine
I go back to December, turn around and change my own mind
I go back to December all the time

I miss your tan skin, your sweet smile
So good to me, so right
And how you held me in your arms that September night
The first time you ever saw me cry
Maybe this is wishful thinking
Probably mindless dreaming
But if we loved again, I swear I'd love you right
I'd go back in time and change it, but I can't
So if the chain is on your door, I understand

This is me swallowing my pride
Standing in front of you, saying I'm sorry for that night
And I go back to December
It turns out freedom ain't nothing but missing you
Wishing I'd realized what I had when you were mine
I go back to December, turn around and make it alright
I go back to December, turn around and change my own mind
I go back to December all the time, all the time

She finished the song, and when she turned her face to left, she jumped a little from her seat. There was someone, who has been watching her.

Sica's POV

I decided to go around this school. it was nice, it has a great view and the building is