One common theme could be the exploration of the unknown. The idea of carrying alien eggs brings a sense of mystery about what will happen next. Another theme might be the relationship between the human (or whatever species is carrying the eggs) and the alien race. It could be a relationship of fear, cooperation, or something in between.
One common theme is the exploration of the unknown. Since it's an alien pregnancy, there are so many unknown factors about the biological process, and fanfictions often explore this. Another theme is the acceptance or rejection of the pregnancy. Just like in human stories, the female alien character may struggle with whether to accept the new life growing inside her.
In most fanfiction universes, it depends on the specific rules and lore established. However, from a biological and ethical perspective, it's a very strange and complex concept. The Alien Predator has its own biological makeup which may not be compatible with such a situation in a traditional sense. Also, in fanfiction, it might be considered too extreme or against the general tone of the source material for many readers.
I'm not aware of specific 'pregnant with alien eggs fanfiction' stories offhand. However, you could try searching on fanfiction websites like Archive of Our Own. They have a vast collection of fan - made stories, and you might be able to find what you're looking for by using relevant tags and keywords in the search bar.
One popular pregnant female alien fanfiction might be 'Alien Encounter: Motherhood Beyond the Stars'. It tells the story of a human female who becomes pregnant after an encounter with an alien species and how she copes with the unique situation. Another could be 'The Alien Queen's Pregnancy', which focuses on an alien queen's journey through pregnancy in a fictional alien society.
A plot could revolve around the medical aspect. Since it's an alien - human pregnancy, there would be a lot of unknowns for the human medical field. Scientists could be trying to study the pregnancy to understand how it's possible and what implications it has for both species. Meanwhile, the pregnant human could be dealing with strange symptoms that are a combination of both human and alien pregnancy traits. This could lead to a race against time to ensure the health of the mother and the unborn child. And perhaps the couple has to deal with some sort of intergalactic bureaucracy that has rules about cross - species breeding.
The Saiyans are quite popular. They are a well - known alien race from Dragon Ball, but in Naruto fanfiction, they can be re - imagined to fit into the Naruto universe. Their natural fighting abilities and the concept of power levels can add an exciting element to the story.
They would have to communicate more deeply. Since they are bringing a new life into the world, they need to discuss things like how to raise the child, what values to instill, and how to handle the potential differences in the child's appearance or abilities. This could lead to some arguments as they come from different cultures and species, but also strengthen their bond as they work through these issues. The pregnancy would also force them to be more open with each other about their own species' traditions and expectations regarding family.
There could be an alien with a plant - like appearance that can control nature on Earth in ways that the local supernatural beings can't. It comes to Earth because it senses the unique energy of the Highschool DxD world and wants to study it. Along the way, it gets involved in the various power struggles and forms an unexpected friendship with one of the main characters.