Dungeons and Dragons (Succubus Edition)

You serve as the king's knight at the kingdom of Fockward, a beautiful city that is full of life and happiness. However, the succubus has attacked your kingdom, and unfortunately the guards, including you, were so incompetent that the first person to be kidnapped was the king. While the succubus are too busy trying to sexually assault the male knights and guards, you were the least undesirable victim that you were able to escape the kingdom safely so that you can head out to the succubus den to save the king from losing his virginity from a succubus and losing all his life force. If the king dies, the kingdom falls and and the empire is no more.