The remarried empress

Empress Navier and Emperor Sovieshu were the perfect couple to rule the Eastern Empire until Sovieshu falls in love with a mere commoner named Rashta and brings her back to the palace to become his mistress. Navier is forced to accept Rashta into the court, but she struggles to maintan her composure when other royals arrive at the paalce, including Heinrey, the Prince of the Western Kingdom. Sovieshu asks Navier for a divorce, and she agrees on one condition: she be allowed to remarry the man of her choosing.