Kaho Miyamori, a classmate who is one of the most beautiful girls in the school, and Kasumi Miyamori, a teacher at Shoryo Gakuen, are sisters who owe a large amount of debt left by their deceased father and could be sold into the sex industry at any time. Hiroyuki sympathizes with the sisters, who were in a difficult situation, and tries to offer them some benefits, but he is easily rejected by Kasumi. He is outraged by the attitude and turns from pity to hatred! rnrn