Run, Bastard Son! Crown Prince, Stop Chasing Me!

Situ Yu, a top assassin from the twenty-first century, was born into the body of an unsupported son born to a concubine in the prime minister's household. Disguised as a boy, she was sent to live in the countryside as a child. Alone, she sought out a master, then took in four maids. Amid the chaos of war, she made a name for herself in the martial world as the Young Master Muhua. Later, because of one of her maids' backgrounds, she infiltrated the prime minister's household and resumed her life as a “son born to a concubine,” eventually marrying the princess, who was considered a fool.

Chi Yumò, the hegemon of the martial world, was betrayed by someone close to him during a mission and poisoned with a strange toxin that turned him into a child. She saved him, and when danger found him, she protected him. As they spent more and more time together, he fell for her without realizing it. But when he meets her again under another identity, what sparks will fly?