The Heavenly Court Sanatorium

A schizophrenic from the mortal world accidentally lands a job as a male servant at a mental health sanatorium in the Heavenly Court. The place is full of young immortals from wealthy families who have developed mental troubles out of sheer boredom, as well as mighty immortals whose personalities grow stranger the more powerful they become. After thousands upon thousands of years of isolation, watch how the protagonist rises to the pinnacle of life at this celestial sanatorium.