There could potentially be some very niche or out - of - the - ordinary fanfiction that involves such a plot, but it's not something that would be easy to find in mainstream fanfiction repositories. It might exist in some more specialized or less - regulated fan - created spaces, but it's also possible it doesn't exist at all.
On the other hand, there could be a small group of fans who are into very alternative and creative interpretations. They might see it as an interesting exploration of the characters in a completely new and unexpected way. They could engage in discussions about how the story could develop given this very unusual premise, exploring the potential character growth and relationship changes that could result from such a situation.
In the manga, Ayato survives his encounters with Kaneki. The story doesn't have Ayato being killed by Kaneki. Their interactions are part of the complex plot but not resulting in Ayato's death.
One common theme is the exploration of their relationship dynamics. Given their different personalities in the original work, fanfics often delve into how they interact with and influence each other.
You can try searching on some popular fanfic websites like Archive of Our Own (AO3). It has a large collection of various fanfics, and you might be able to find some great kaneki x ayato ones there.
Ayato would likely become more possessive. Since Yui is carrying his child, he would see her as even more precious and something that belongs solely to him. He might be more affectionate in his own rough way, like constantly checking on her and being more touch - sensitive.
Well, perhaps in the fanfiction, Yui discovers she's pregnant and is filled with a range of emotions from joy to fear. Ayato, on the other hand, is excited in his own way as it's a sign of his dominance over Yui. The story could then focus on how they navigate the changes in their relationship, like Ayato having to be more responsible and Yui having to deal with the physical and emotional changes of pregnancy while living among vampires.
Well, in certain fandoms, the idea of Ayato and Yui getting pregnant can be a big deal. It might be popular because it gives fans a chance to imagine a future for the characters that is more domestic. It can also lead to all kinds of storylines, like how they deal with the pregnancy, whether it's a normal or a difficult one. There could be conflicts with other characters regarding their decision to have a child, or it could bring everyone closer together in anticipation of the new arrival.
They would become more protective of each other. Kaneki would be constantly worried about Touka's health during the pregnancy, and Touka would be more cautious about getting into dangerous situations. Their relationship would also become more centered around the future, planning for the baby's life.
There could be. Fanfiction often explores different scenarios and relationships. But it can be a bit difficult to find as it depends on the popularity of the characters Tomoe and Nanami in the fanfiction community. You may need to search through multiple fanfiction websites like Archive of Our Own or FanFiction.net to see if such a story exists.