Burnt secret

When Reyan woke up he found himself in infirmary of the school (it was almost 10 minutes since incident happened), before fainting he remembered he saw the girl with patch and before that he saw a shadow. Height 5'8 because of bright sun he wasn't able to see the face of that shadow. He got up from the bed and ran quickly towards the roof. When he opened the door of the roof, he saw her.

Reyan -(shocked) you? Why are you here? (Almost shouting)

You are wearing the same uniform but my friend never saw you in this school. Infact only only him but I also didn't see you.

How can you roam in the school freely?

Why nobody stops you?

Girl - I don't have time to answer your silly questions and btw it's really none of your business. (she was about to leave)

Suddenly both of them saw a piece of paper. Reyan bends down to pick up the paper but before he could pick it up she picked it up and was about to leave. Reyan held her hand and said hey! Stop! We need to talk OK! You can't leave just like that.

Girl- I told you I'm not going to answer your questions leave my hand (she pushed him).

Suddenly door opens

Police and principal entered through the door. She hides behind Reyan

Principal- what are you doing here? It's a crime scene and you can't enter as per your wish.

Reyan- sorry sir I'll leave, he thought why principal didn't scold the girl. He was on the steps and saw her.

Girl - I'm Richa and I saw the same thing as you did.

Reyan- you mean shadow. Right?

Richa- yes. All I can say is let's try to find the clues. OK?

Reyan nodded his head and saw principal coming towards them.

Principal- what are you still doing here? I told you to leave right?

Reyan - sir we need to tell you something. Actually we think it's a murder and we saw someone.

Principal - who we? And what are you saying murder. Never mind I already told you it's not your place to say something. And it will be good if you keep yourself out of it.

When Reyan turns around Richa was gone.

Ambulance arrives and took away the body of the girl. Teachers and students were talking about the girl.

Reyan leaves the school, on the way to his home he was talking to himself.

This is weird, why would she commit suicide?

And who was the person on the roof?

Where did the Richa go and what written in the letter?

He walks into his home and wishes his grandma, good evening granny (with a smile).

Sun is setting and at the back of the school there was smoke.

Someone was burning something.

And it's Richa throwing the piece of paper carelessly into the fire.

That day not only paper burnt but also the secret written on it also got burnt.