I entered the ancient sadistic novel and became the substitute heroine's bloody sister.
In the original text, my heart was cut open by the male protagonist and my blood was taken just to treat her heart disease.
The first thing I did after returning from rebirth was to pour poison into my sister's mouth.
"Since we are united as one, wouldn't it be better to treat my sister's disease with her own blood?"
The male protagonist's eyes are about to burst, and his sister's beauty is pale.
I smiled and wiped off the blood on my fingertips: "This time, it's your turn to beg me."
