One common theme is probably the overcoming of obstacles. Since they might face different challenges in the original story context, fanfictions often explore how they get past those to be together.
I'm sorry, I don't have specific fanfiction to recommend directly. You can try searching on fanfiction websites like Archive of Our Own or FanFiction.net. Just type in 'Saito and Henrietta' in the search bar and you should find a variety of fanfictions about them.
You can try fanfiction websites like FanFiction.net or Archive of Our Own. They have a vast collection of fanfictions, and you might be able to find some about Saito and Henrietta getting married by using the search function on those sites.
A third plot twist could be an external threat to their marriage. Perhaps a powerful enemy from another land tries to break them apart by spreading false rumors about Saito or Henrietta. This forces them to work together to clear their names and strengthen their bond in the face of adversity, showing how their love can overcome such challenges.
Love is a very prominent theme. Writers like to expand on how Louise and Saito's love blossoms and endures. Also, the theme of self - discovery for both characters is common. They often learn more about themselves through their experiences together in the fanfiction. For example, Saito might discover new magical abilities or Louise might find a new side to her personality.
One common theme is the clash of cultures. Naruto comes from a world of ninjas with its own set of values and Henrietta from a different, often more refined world. Their interactions often explore how they adapt to each other's cultures.
It's appealing because it allows fans to play with different scenarios. Maybe in one fanfiction, Saito and Henrietta go on an adventure that was not in the original story. It gives a chance to see how their characters would interact in new situations. Also, the fans who love this pairing can create a world where they can be together more often or in different ways than in the main plot. This freedom to create and explore is what makes such fanfictions really interesting.
One common theme is self - discovery. As Saito travels through time, he often learns more about himself, his strengths, and his weaknesses. For example, in many stories, he realizes his potential for leadership or his ability to adapt in different situations.
The theme of sacrifice is also prevalent. Henrietta is in a situation where she may have to sacrifice her own well - being or even her life for the mission. And then there's the theme of friendship. Despite their circumstances, the relationships between Henrietta and the other Gunslinger Girls can be a central theme in fanfiction, showing how they support each other.
One common theme is love. Since it's a fanfiction about two characters, often the relationship between Saito Hajime and the OC is centered around falling in love, whether it's a slow - burn love or love at first sight. Another theme can be adventure. For example, they might go on a journey together to fight against some villains or to find a lost treasure.
You can try fanfiction websites like FanFiction.net or Archive of Our Own. Just search for 'Familiar of Zero Saito x Henrietta' on their search bars, and you'll likely find a variety of fanfictions related to this pairing.