A sudden Darkness

Suddenly, Mark fainted. When he woke up, he was engulfed by light. His body had returned to his boring, normal self. His mind had changed back to normal, too. Before him was someone he recognized: His sister. And he meant that literally; she had returned to her usual self, too.

"Welcome Mark. I see that you have bred your second slave, the womb of your future children, half-gods, so to speak." she spoke. He remembered her name, Voluptas. "You! Didn't you say my conquests were limited to three and then I would lose my powers?" He said. She answered in a calming voice "That is indeed correct and the reason I summoned you to my realm. As I said, you have just finished you second conquest, your sperm has impregnated a certain Ms. Emma Bower. I can see that yu have a type, hm?" "Wait wait wait I didn't even touch her, let alone 'breed' her!" " I didn't say that, my dear. I said that your sperm impregnated her. I didn't say that it was directly your doing." Mark was confused. What had happened that Ms. Bower had been impregnated by his sperm?