Yami Shibai

Synopsis

A man wakes up in a hospital with no memory of how he got there and tries to question three men dressed as patients who whisper amongst themselves in a corner but they ignore him. The doctor explains what had happened to the man and that he would be able to leave the next day. That night unable to sleep, the three men seem to stand outside the curtains of the man's hospital bed, frightening him. The next day, as the man is released, he notices the three men on the hospital roof, seemingly performing the banzai cheer for him, which he relates to his cab driver. The driver notices the men in the rear view mirror and horrifically realizes they are doing a ritual called "Zanbai" to which he suddenly urges the man to get out of the car since he would not be able to leave the village alive, at which point the cab is struck by an oncoming truck.

(Source: Wikipedia)