As a Concubine in This Life

She came to the Kingdom of Jin from a distant country with a certain purpose, and accidentally entered the palace and was abused in various ways by this domineering man. Her hands were stained with the blood of countless people, but she could not do anything to him. When she learns that the man she loves deeply also loves another woman, and this love rival eventually becomes her biggest obstacle to the harem, where should she go? Should he just accept his fate or be reborn from the blood?