The Fake Prince Who Lives in the Harem

I've traveled through time! Good news, my identity is the prince! ! Bad news, I am a fake prince pretending to be a eunuch. But the emperor still hates him, so he can only bully the imperial concubine... By the way, develop your power and rebel! I don't ask for much, I just want a life of freedom and all the nations in the world come to court! I come, I see, I conquer!