Thanks to Tanaka-san for sharing this video clip.
This video was captured by surveillance camera in an office block. Please look at the top right camera and there’s a girl walk pass the wall to a room that being emptied for a couple a years due to numerous murder and suicide case. After so many years, this is the first time that a ghost was captured by the camera. Some of the people were interviewed and they said that sometime there were sounds (singing, crying, smiling, laughing, etc) came from that room. Some of them also said that these unknown sounds were heard in the washroom as well. This is why most of the people working on that floor were reluctant to work overtime unless there is someone to accompany them, they said.