The day I moved into my room, the seniors told me a story:

They said that a girl named Hannah had died in the hall of our rooms, and her spirit is still around.

However, Hannah is a nice ghost, even though she likes to haunt people for fun.

If you ever meet her, you have to greet her by saying, "Hello, Hannah."

If you don't, who knows what she will do. 

Last year, a student died from falling off the terrace of his room. People said that it was Hannah who lured him out and pushed him off.

Bullshit, I thought to myself.

The first night, while I was studying for my exams, like how any good students would, I heard a knock on the door. I thought it was my roommate, so I opened the door immediately.

But there was no one there.

Maybe it's just the wind, or something knocking off, I comforted myself to stop the dangling feeling in my heart. I closed the doors.

Knock, knock.

I was sure I heard it this time. It's not the wind, nor anything else. It was clear that someone from outside is knocking on the door of my room.

I did not want to go and open it this time. However, the door creaked open slowly by itself.

Remembering the tales from the seniors, I gave it a try.

"Hello, Hannah."

I said it. It probably won't work anyways. There's no such thing as ghosts or spirits. I felt ridiculous, but I was willing to try anything.

After the sound of my voice traveled through the crack between the door and the wall, I witnessed the knob turned and the door closed again.

Now that I am a senior, I warn the freshmen about the tale of Hannah. I tell them that Hannah is very friendly, you just have to be polite.

So next time, if your door creaks open, welcome Hannah in your room with a smile on your face.