There are many novels in which the female protagonist transmigrated. The male protagonist is the emperor, but the female protagonist doesn't know the identity of the male protagonist when she knows him. 1." The Tyrant's Favorite Concubine " The Queen Reborn 3 Tyrant, I'm from MI9 4."The Bastard's Daughter Is Poisonous" 5." Special Agent Concubine: Your Majesty, I'm Going to Destroy You " I hope these recommendations will suit your taste. If you have any other questions, feel free to ask.