Hikiko vs. The Slit-Mouthed Woman(Hikiko-san vs. Kuchisake onna)

Two elementary schoolchilden Misaki and Hitomi had fallen into a coma. Ten years after, They awake. They have a memory that they had been attacked by Hikiko-san. By the way, there is a rumoor that Kuchisake-onna has been imprisoned in the hospital where they were hospitalized.