Regicide Strategy: Raising a Concubine Will Cause Trouble

The noble daughter of a prime minister had her entire family slaughtered in one dynasty, leaving her alone in the world. The abandoned son of the royal family ascended to the throne overnight, and despite the objections of all the ministers, he forced her to stay with him; She walked forward in his harem carrying the tragedy of exterminating her family. Escape was what she always insisted on... Around him, there is an eldest brother who seems to have no desires and desires; and a third brother who seems to be carefree. Are you pretending to be a pig and eating the tiger, waiting for the opportunity; or is this really true? What kind of past events will be involved in each confrontation? And how will they move forward in the story...