My Story: I was in the photo session in the hall. After we have taken the picture, our teacher give us a chance to look at our own class picture.
Suddenly, behind me, a girl without a head shock us. My teacher told us that it was our imaginary only.
That night, i was sleeping in my bedroom when i saw a classmate spirit beside me. I was told that my friend ask the girl to disturb me. Thats all i could say.