Relationships are also a big theme. Whether it's the relationship between the pregnant character and their partner, or their relationships with colleagues at NCIS. For example, their colleagues might be overly protective or have mixed feelings about the pregnancy affecting the team dynamic.
The theme of anticipation and fear is often present. The pregnant character is anticipating the arrival of their baby but also fearing the potential dangers that their job might pose to the pregnancy, and how they will handle motherhood or fatherhood in the midst of their NCIS - related chaos.
One common theme is the adjustment of Ziva's life. Her pregnancy forces her to reevaluate her role in the NCIS team and her personal life. Another theme is the support she gets from her colleagues. They often become like a second family, helping her through the difficult times.
One common theme is the reaction of the team members. For example, Gibbs might show his protective side in a different way when a team member is pregnant. Another theme is how the pregnancy affects the character's role in the NCIS investigations. They might have to step back or find new ways to contribute.
One common theme is the clash and combination of different worlds. The magical world of Harry Potter and the law - enforcement world of NCIS. Another theme could be the characters' adaptation. Harry has to adapt to the new rules and ways of NCIS, and the NCIS agents have to deal with the existence of magic.
A third common theme could be personal growth. Bella Woods might start as a novice or an outsider in the NCIS world. As the fanfic progresses, she could develop her skills, gain more confidence, and become an important part of the team. This can be shown through her handling of different cases, her interactions with superiors, and how she overcomes obstacles in her path.
One common theme is friendship. Writers often explore how an OC can become friends with Ziva, showing different aspects of Ziva's personality through her interactions. Another theme is mystery, like when the OC is somehow involved in a case that Ziva is working on and there are secrets to be uncovered.
One common theme is the cooperation between the two teams. Since they come from different but related agencies, the fanfictions often focus on how they learn to work together. For example, they might have to overcome differences in their investigative techniques.
Love and family are common themes. It often shows how Sasuke and Hinata's relationship evolves with the new addition to their family. There's also the theme of anticipation and dealing with the changes that come with pregnancy.
Often, there are themes related to the challenges they face. For example, how they deal with the reactions of others in their world, be it friends or enemies. Also, the protection of the unborn child can be a significant theme, with Sesshomaru using his powers to safeguard Kagome and the baby.
One common theme could be the anticipation and preparation for the new life. This might include scenes of the character getting the nursery ready or shopping for baby items.
If such fanfics exist, a common theme could be the emotional journey of Hanji during pregnancy. It might explore how she copes with the physical and mental changes, and how her relationships with other characters are affected.