Incubus sex test run

Isabel had been returned to her cell after the Battle of Astolfo. Fred entered the cell.

"Where is my dear Marcus?" Isabel cried out.

"I convinced him it was in his best interests to join with me" said Fred, "he is still King of Astolfo, I realise that as dark lord, I would need to leave people in charge of the kingdoms I conquer"

"So what is it you're here to see me for?"

"You're a lab rat"

"What's a lab rat?"

Isabel assumed that Fred was gonna literally turn her into some kinda rat. Instead, he assumed his incubus form.

"You're a demon?!"

"Incubus to be precise" said Fred, "and my harem are worried about my penis mutilating them so I'm gonna test it on you"

Fred stripped naked and began to **** Isabel. Isabel was naked and in chains, helpless to fight against him. However to her surprise, Fred was gentle with her. He wanted to make sure his fucking in demon form wouldn't hurt anyone.

"You like that?"

"It reminds me of my brother"

Fred pulled out and resumed human form.

"Please, don't stop" Isabel cried.

"Sorry, Isabel, but you were just a test subject"

Fred left the cell, leaving Isabel sobbing.