He makes a deal with you

Every thing goes black and you suddenly find yourself in a dark place. You can not see any walls or roof. Neither can you the sky. Every where is just black.
Then you feel a presence. Standing in front of you is a demon.
He towers over you over six foot tall with horns.
"Your's is not the body I wanted. But I have decided to stay in it. Until I get what I wanted. A more suitable body. In fact there is a way you could help me get a more suitable body. I wish you to make one for me!" You hear Marlac's words echo all around you. "I want you to become impregnated. Once you are with child I shall posses the child and leave your body. How does that sound to you?"
You know neither of you have a physical body at the moment. You try to back away from him. But he grabs hold of you.
He feels so real as he pulls you to him. He smiles at you and tells you he will teach you to obey him.
He then forces you to knees before him. You are now face level to his crotch. His cock is erect and huge. At least two foot long and as thick around as a mans arm.
You look up at him and he tells you to suck it.
You start out by licking his balls. Once you start he releases his grip on you. You know you have nowhere to run even if you got away from him.
You lift yourself up a little two reach the head of his cock. You suck the head while using both of your hands you take hold of his shaft. Even with with your hands on both sides you can not touch your fingers and thumbs.
You spit on your hands and start jerking on his cock.