[Female lead with split personalities + femme fatale + a massive battle for her affection + tormenting scumbags at every turn]
Xie Guining has a secret...
When she was five, her father abandoned her in the wilderness to make room for his beloved's daughter. After going hungry for two days and two nights and then being attacked by a ferocious beast, she “split” off a ruthless second self.
At fifteen, she was finally brought back to the household by her father and brothers. She thought they would love and care for her now that she was home, only to discover that they had brought her back so she could take someone else's place in an arranged marriage.
Life in the household was a constant struggle. Her father despised her, her eldest brother loathed her, her second brother beat her, and her third brother framed her. Just as she was about to be killed by the daughter her father cherished, she “split” off that ruthless self again.
From then on,
Gentle and kind? An act!
Weak and easy to bully? An act!
Innocent and virtuous? An act!
Cruel, ruthless, and heartless: that's who she really is. So when she learns that the poison in her body can only be cured with a medicinal catalyst made from the heart's blood of six men born in a yang year, yang month, yang day, and yang hour, she acts without hesitation.
By sweet-talking, tricking, threatening, or bribing them, she wins over all six in seven days!
Her life is saved!
But afterward, all six men look at her with red eyes and demand that she take responsibility.
Her: Take responsibility? For what? I got the heart's blood fair and square, so what do I owe you?