I went to my friend's house a lot of times and I had never experienced anything creepy in it.

Last year when I was around , I went to her house and we planned on watching anime or something. We were alone in the house so we were quite loud. As time slowly passed the room gets darker. The lights weren't on but we didn't mind it.

Until we were randomly talking and my eyes landed at the floor. The floor was dark but there was a figure with a crawling position. It seemed like a human. I started to panic at the inside and said, "Hey, can you turn on the lights?"

She agreed and turned on the lights and when the room was lightened up there was nothing there! It's just the plain floor! There wasn't any scattered things, a coffee table or any bags at the place! There was nothing but oxygen!

I told it to her and she said, "Maybe it's just a rat," and I don't believe her. It's impossible for it to be a rat.