A Japanese yōkai that was said to steal corpses from funerals and cemeteries. The cannibalistic spirit would sometimes hover near crematoriums to try to feed off human corpses before they can be properly cremated. They also preferred the corpses of those who had lived a sinful life.

It was also believed that kasha were actually cat yōkai, and that very old cats would sometimes turn into kasha at the end of their lives. 

Many Japanese families maintain a vigil over the bodies of their recently deceased relatives to ward off the kasha by making loud noises on bells, gongs, and drums. Other methods to repel a kasha included playing a myobachi, a traditional Japanese musical instrument, holding two funerals for the deceased and putting a rock in the coffin for the first funeral, or leaving a hair razor on top of the coffin