Kyousuke asks his stepmother Megumi to leave the house after his father Kazuma died and bequeathed him everything. He wears it to her that she had chased his own mother. He however is the payment of a large sum of property tax to the house because of the precious paintings, which he inherited, what makes the proposal to deal with it, if he does leave only the images, all the rest would not be interested anyway and places on it as a bonus, even the free disposal of her daughter Yuna. It is therefore not wrong that Kyousuke desires this, but that he also discovered the sadist in him, that he himself did not expect any more than that he has found the perfect submissive Yuna counterpart.