This musical instrument was brought to Sakai from the Ryukyus about 400 years ago, and its original form continues to this day. It is characterized by the fact that a single craftsman masters everything from the woodwork to the installation of the acoustic membrane. The shaft is made of South Sea hardwood, which has few warps, and is made using special tools (plane, chisel, saw, and chisel). This is a unique musical instrument in the world where natural animals are used for the acoustic membrane.