Mei Tanaka

...The title literally means "slit-mouth woman" and is reminiscent of the gruesome ghosts of Japanese folklore. The movie is based on a famous urban legend from the late 1970s, in which a masked woman would terrorize young children on their way home from school... (monstermovieblog.blogspot.com)

The Kumagawa Hospital which is located in the outskirts of town. Ogami Runa joined as a nursing staff 2 weeks ago. One night, with the lights all turned low, her fellow colleague, Suzuki Ayako is terrified out of her wits when a woman dressed in a school uniform (sailor) with blood dripping all over her, appears before her. A few days later, Runa's childhood friend, Sakai Manami who works at a movie production company, calls her out for a meet-up... (trakt.tv)