what is the white triangle that ghosts wear?
The triangular, white corpse-hat consists of a small strip of cloth, cut or folded into a triangle, which covers the forehead and wraps around the back of the head. It works like a headband, and the Japanese use the word boshi (hat) or nuno (cloth) when describing it. The cloth is not a consistent item on the costume of a yurei, a Japanese ghost. As with everything else in life, burial fads come and go. Although the white burial kimono, called a kyÅkatabira, has stayed the same for centuries, the same thing cannot be said about the cloth.