Defeated Hero - Raped, Rushed and Impregnated by the Demon King

A hero challenges the Demon King to save the world. The hero who was supposed to be the hero who won a brilliant victory and saved the world was easily defeated and humiliated by the Demon King. He was forcibly raped, and while screaming pitifully, he gradually surrendered to the Demon King. Finally, he begins to show the face of a male who begins to desire the Demon King...