Ty soon came up with a fantasy he liked the idea of: he had always been fascinated with royalty in ancient times. It might be fun to be reborn as the heir to a monarchy in a kingdom or an empire, and get to live as the great leader of such a land. And so he wished to move into the womb of a ruler through whose blood he would inherit the throne.
Even though the location he resided in was much the same, he could tell everything else had changed- the time period, the location, the person he inhabited, none of them were where he was born or his original mother. He sensed his ovum form was now inside a woman who was, with her husband, one of the two most powerful people in the land.
He couldn't distinguish much, with no idea what land they ruled nor who they were (he hoped they weren't siblings or anything gross like that, and wished his development would be free of defects just in case before banishing the thought). But in his mind's eye he saw their bodies- a beautiful young woman spread her legs for a handsome young man, their bodies aroused and fertile, and he pounded into her eagerly, both acting on instinct as much as desire. The pleasure of their fucking reverberated through to Ty, and he felt arousal from both the act and the knowledge his form would soon be complete with his fertilisation.
After a while, the monarchs hit their peaks, and he pumped his seed into her, which swam towards Ty. They wore away at the boundary of his ovum's wall, the sensation tantalising to him as he prepared for one of them to come inside and make an heir out of him.
At last one passed through and fertilized him, and Ty felt himself start to develop into...