This incident happened personally to me.
It was a few years ago, during a npcc camp. I could't get to sleep on the hard desk so i decided to go to the window of the classroom(where the cadets were supposed to sleep) and tried to got some fresh air. At that moment, all the other cadets were fast asleep.
As i walked to the window, i feel rather uneasy. You see, the window is facing the school basketball court directly and the sight of them shining under the moonlight freaked me out. Anyway, i tried not to look at them and took a deep breathe. But just when i was about to do so, i heard the sound of a ball bouncing from the basketball court. I peeped through one of the window panes and saw a figure of a boy wearing all white, from head to toe. I was very scared and went back to my desk, shivering.
When i told my sir the next day, he don't believe me and said that maybe i was just too tired.
But i know my eyes would not lie to me............