she was there, sitting on a table in the middle of the empty class.. a black-haired girl, a mysterious girl. I saw her every single day, every single day. she was there in the class, studying maths for hours, studying and thinking nonstop. Every day I went to that classroom, she just was there. The classromm was never full. It allways was hers. For some moments I remember, I thought myself crazy. But she was there, real. She never took any pauses, never stopped studying, even at night. That freaked me out sometimes. I someday tryed to touch her and get any closer to proove whether she is a phantom or not. But everytime I did it, she just disappeared. And one day, I got a bit close to her and then, she, for the first time, talked to me, I never saw her face. She just said "Back off!" and I kept going, and she said again "back off or you'll get killed". I freeked out but somehow, my legs kept moving, until I was two inches away from her. Then she turned, and she was crying. Such a sad beautiful face!! But when she saw me, she stopped crying and read my face like an open book, then just smiled and said "congratulations, come back tomorrow and you will be my friend. I am the ghost of this classroom, that's why nobody comes, everybody refuses to get any closer because I died here solving this math problem. I'm still not understanding it. Can you help me tomorrow?"