This world is an imaginary world. In ancient times, in a feudal dynasty, there was a family of luthiers. At first, their ancestors played the zither for the emperor. Then that dynasty disappeared. They ran away with the emperor's zither, and gradually developed a kind of magic. They used the sound of the piano to control or hurt or heal others. These three kinds of zither sounds are individual. Some people control, some hurt, and some heal. The healing system is the least, and the heroine is the cure. Then someone specially arrested their family's healing system, because the healing system has no ability to protect itself, and they are locked up to play the piano.
This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.
