Hyunjin (Emperor) sister and concubines

The title of Hyunjin was a great emperor who doted on no one, a cold, rude, cruel, reserved, and important man. To become a concubine in his kingdom, one had to suffer through holding a year in one's mouth for 24 hours at the palace. Felix, whose father knew about the requirements, forced his son to sit in an ice bath for 3 days to stab his son, and Felix endured. So he became the emperor's concubine, but lived in terrible conditions and succumbed to the ridicule of other concubines and concubines of higher status. One day, the emperor's sister, Jiwon Nai, not knowing that her great brother had turned into a puppy with a chopped-off tail, wanted to kill the little cripple, but Felix stood up for the puppy, not knowing that it was the emperor. In principle, Felix was not allowed near the emperor, and therefore Felix did not even know what this great man looked like.