Located in a populated region at a depth of 6000 meters beneath the ocean's surface, the sanatorium is renowned for housing psychiatric patients. Rumors suggest that these individuals are more than human, possessing a level of intensity that far surpasses that of the average person. While the lives of ordinary mortals are comparable to fireworks, the lives of these individuals are more akin to an atomic bomb. This facility has been in operation for over 2300 years, dating back to the Eastern Zhou era in 307 B.C.
