Saimin Mesu Dorei Kishi Sofia ~Lez Kishi Danchou, Saimin Choukyou ni Ochiru~

The kingdom is protected from demons' attacks by the knights led by Sofia and the mage Rick. But Sofia clearly hates Rick and shows it so much, that when they are asked to become more friendly, he decides to take decisive action. Using hypnosis and dark magic, he will turn her into his sex slave.