VRTM-456 Our sister was brainwashed into a stepfather's sex toy.

A loving four-person family has collapsed, a gentle stepfather has become a person by the evaporation of his mother, a sister who competes with one another to become his stepfather's NO 1 sex toy, a loving sister who is torn apart by the desire of his stepfather, a sister who has been brainwashed and abused by beasts, and whose body and body have been corrupted for economic reasons only to raise one person.