Carved

Carved: The Slit-Mouthed Woman is a 2007 Japanese supernatural horror film directed by Kōji Shiraishi and written by Shiraishi and Naoyuki Yokota. Based on the Japanese urban legend known as Kuchisake-onna, or "the Slit-Mouthed Woman", the film stars Eriko Sato as Kyōko Yamashita, a divorced mother and teacher who attempts to solve a series of child abduction cases with the help of her co-worker Noboru Matsuzaki, played by Haruhiko Kato.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.

Poster © the film's rights holders.