Well, it could be about the challenges Clary faces during childbirth, like her fear and the support she gets from her friends. Maybe her partner is by her side, holding her hand through the pain.
Maybe Simon. If the fanfic takes an alternate path where Clary and Simon end up in a romantic relationship, he could be the father. However, he might be away or unable to be with her when she gives birth.
Obviously, Clary herself is the most important character as she's the one giving birth. Her partner would also be crucial, providing support and sharing the joy of the new arrival.
One possible scenario could be that Clary is in a situation where she has no one around due to some unforeseen circumstances like being stranded in an isolated place. Another could be that she chooses to be alone because she doesn't want others to see her in a vulnerable state during childbirth.
Maybe in the fanfic, Annabeth is in a situation where she has to give birth alone in a dangerous place. She could be on a quest when she goes into labor prematurely. She uses her wits and knowledge of survival to ensure the safety of herself and her baby. It could show her strength not just as a demigod, but as a mother - to - be.
One idea could be that Artemis has to face unexpected challenges during the birth. Maybe there are threats to the baby from some mythical creatures who see the new life as a potential future enemy. Another could be that the other gods and goddesses react in different ways, some with envy and some with joy.
The fanfic could focus on Astrid's pregnancy journey that led to the birth. It might detail how she coped with the physical changes and the support she received from Hiccup and her friends. There could be a part where they prepare for the baby's arrival, like building a nursery or gathering supplies. After the birth, it could show the couple's joy and the celebration within the village, with everyone coming together to welcome the new life.
One possible plot could be that Bella's journey through pregnancy is filled with challenges. Maybe she has to deal with difficult family reactions. For example, her parents might be initially shocked but then gradually come around to support her. There could also be a focus on her relationship with the baby's father, whether it's a loving relationship that strengthens during this time or a more complicated one where they have to work through issues.
The plot could also involve the father of the baby being a mysterious figure. Maybe he's from a far - off land that Elsa visited during her adventures after the events of the Frozen movies. And as she gives birth, the baby could inherit some of her ice powers, which would lead to a whole new set of challenges and adventures for Elsa as a mother, like teaching the baby to control its powers from a very young age.
One possible plot could be that Sakura has a difficult birth. Naruto is by her side, worried sick. Their friends from the village are also there, waiting anxiously. Maybe there are some complications during the birth, and Sakura has to draw on her inner strength as a kunoichi. And in the end, she gives birth to a healthy baby, which brings great joy to the whole village.
Perhaps it could involve some sort of magical or scientific experiment gone wrong that results in Tony being able to give birth. Peter could be the result of a genetic manipulation within Tony's body, and the story might then focus on how they adapt to this strange new situation.