In today's society, where many different races live... My father remarried and I ended up living with a new family. His new wife is a fairy, Yuki, who became my stepmother, and her daughter, Mio, who will become my sister. I had a hard time living due to the difference in body size between fairies and humans but one day, Mio photographed me masturbating to a picture of my stepmother Yuki. She threatened me about it and I had no choice but to do what Mio told me to do...