Bastard, Run Away. Prince, Stop Chasing Me.

Situ Yu, the top killer of the 21st century, was born as a helpless "concubine" in the Prime Minister's Palace. He disguised himself as a man and was thrown into the countryside when he was a child. He became a disciple alone and later accepted four maids. In the troubled times, he created his own name in the world of "Muhua Gongzi". Later, because of the background of the maid around him, he sneaked into the prime minister's house and continued to act as a "concubine" and married the idiot princess of the dynasty. Chi Yumo, the overlord of the martial arts world, was betrayed by the people around him during the mission and was poisoned by a strange poison. He turned into a child and was rescued by her. When he was in danger, she protected him. As they got along again and again, he fell in love with her unknowingly, but when he met her in another identity, he didn't know what kind of sparks would fly.