It's quite an old story approximately 6-8 years old. I went to my tauji (father's big brother) house for vacations. They were living in a flat. The moment I entered their house I felt something strange although I ignored it.
There was a room with attached bathroom which, I don't know why, always scared me especially the bathroom. I generally avoided to go in that room alone but never got guts to go to bathroom as it always gave me chills although nothing happened for few days so I thought it's a hoax and somehow entered the bathroom when maid was cleaning it. The moment I entered bathroom everything became blurry but the moment I got out of it everything became normal again, but I also ignored it. After few days my cousin locked me into that room to which that bathroom was attached and closed the light. As soon as she left the room I listened to some strange sounds and suddenly bathroom door started opening slowly and bright light and that strange sound was coming from it. I got scared and screamed. Soon father entered the room with my cousin and I told them everything but when they entered bathroom its light was off.
After this incident fortunately everything went fine but I was not able to enter that room again. I asked my uncle about any paranormal activity in that house or nearby but to my surprise he denied it.
I don't know what that was even after watching live possession think it was a hoax (as I was approximately 10-12 years old and was highly feared of ghost) but part of me still believe it was true
What was that if anyone could help me. I will be highly obliged.