Rebirth Trap: Heiress Gone Wild

Two sisters grow up in the same orphanage. On one day two couples come to adopt: a pair worth hundreds of millions, and a pair of well known actors. The younger sister picks the money. The older one goes home with the actors. The rich household wanted a child for her blood, and she is kept and drained for it. Her sister is raised properly, trained, and becomes a star. Years of watching that from where she is turns the younger sister into someone who walks up to her sister at an awards ceremony with a blade, and there is blood on the stage. Then both of them are back in the orphanage on the day of the choosing, remembering everything. This time the sister who chose the money chooses the actors, and the other takes the wealthy couple. Neither of them knows what is actually waiting in either house, only that the version they lived through was not the whole of it, and the family that farmed a child for blood is not the crueler of the two.