Sha is a tall, indigo humanoid. His head appears to be based on a guitar or another similar stringed instrument. His ears are round and flat. Sha's torso is a more blue color and is made up of spheres. On his chest are two keyboards facing each other. His purple legs are obscured by a yellow, fanlike object, attached to his body by three blue spheres. Sha's arms are red and extremely thin.
Sha's purpose is to collect the four musical instruments of Tong-Nou. Once he collects them, he must put them in his room and hear them play. This fulfills Sha's goal, and he dies.
Sha's name is a syllable of the Kuji (九字), a series of nine syllables. The kanji "sha" (者) can be interpreted as "one".