Hanako-san, Japanese Urban Legends

Hanako-san -- a spooky young girl that haunts school restrooms across Japan -- has in recent decades become one of the nation's most famous ghosts.

It is not uncommon for schools to have a toilet permanently occupied by the mysterious girl, who is known in Japanese as Toire no Hanako-san (lit. "Hanako of the toilet"). She is often found in the third stall in the restroom on the third floor -- usually the girls' room -- but this can vary from school to school. Details about her physical appearance also vary, but she is usually described as having bobbed hair and wearing a red skirt.