Horror!! Three Sisters in the Parasite House

Original title: 恐怖!! 寄生虫館 の 三姉妹

Yoriko wanders in a forest and ends up in a mansion where a man who studies parasites and his three daughters live. Yoriko learns from the girls' mother that she looks exactly like her, and she is asked to work as a housekeeper and begins living at the mansion, but...