Yami Shibai 9

Synopsis

Two high school best friends, Mei and Chiaki, are chatting before class when they notice their new classmate Natsuki watching them. After school, Natsuki corners Chiaki alone and tells her about a gesture called the "monkey prayer" - at funerals, it's a silent sign of rejoicing in the death of the deceased, but it can also be used to curse someone to death. That night, Chiaki has a nightmare of being at her own funeral, for which she blames and angrily confronts Natsuki the next morning. Natsuki conjectures that someone wants Chiaki dead, and recommends offering three hairs at the altar in the dream. That night, Chiaki has the same nightmare, where she begins to vanish. She burns three of her hairs at the funeral altar, then wakes up safely. She then looks out the window and sees Mei performing the monkey prayer toward her house, then fleeing after being seen. The next day, it's revealed that Mei had died in a traffic accident. At Mei's remembrance, Chiaki overhears rumors that Mei was trying to steal her boyfriend right before she died. When it's her turn to pay respects, she offers the monkey prayer.

(Source: Wikipedia)