Disguised Demon King and Sacrificial Brave (Captivity and Conditioning h)

The oracle said that she could end the war. She felt that God must have chosen the wrong person, but she still did her best to perform her duties and pierced the devil’s heart with a sword. When she woke up from the coma, she saw the Demon King standing in front of her unscathed, and she became a gift to him. What she could not have imagined was that the demon king, who was famous for his brutality, seemed to have an inexplicable affection for her… After wandering for decades, he finally seized the opportunity on the battlefield and replaced his twin brother. Unexpectedly, the defeated mankind offered a hero, and how to deal with this theoretical enemy became a difficult problem for him. He kept a fire in a lie made of paper, worrying about the flames burning the paper and worrying about the flames going out. A demon king who is cautious, lacks love, and tries to control his violent instincts x a brave man who is soft on the outside and hard on the inside. The essence of XP work, including imprisonment, forced training, humiliation, Stockholm complex, hurt/comfort, etc. The heroine will be in a state of shackles in most chapters.