Some fanfics might also focus on Marinette's own growth during the pregnancy. She might learn to be more responsible and strong, facing challenges that come with the physical and emotional changes of pregnancy. There could also be elements of how she manages her daily life, such as school or her design work, while being pregnant.
One common theme is the exploration of their relationship. It shows how they support each other during this new phase of life. For example, Adrien might be extra protective of Marinette.
One common plot could be Chloe publicly embarrassing Marinette. For example, she might spread false rumors about Marinette at school, which could lead to Marinette losing some friends. Another plot could be Chloe trying to sabotage Marinette's attempts at winning a design competition. Maybe she hides Marinette's supplies or tries to steal her ideas.
One possible plot could be Marinette dealing with her superhero duties while being pregnant. She might have to be more cautious in battles, and her teammates could be extra protective. For example, Chat Noir might be constantly on the lookout for any danger that could harm Marinette and the unborn baby.
Relationships are a big theme. It could be her relationship with her partner getting stronger or more complicated. Also, her relationships with friends and family might change as they all adapt to the situation. Another theme could be her growth as a person. The experience of pregnancy might make her more responsible and mature in the fanfiction.
One common theme could be the support system around Marinette. How her friends and family react to her being pregnant. Another might be how she manages her new situation while still dealing with her usual responsibilities, like school or her superhero duties.
One common theme is the power of music. Since Luka is a musician, his music often serves as a way to connect with Marinette on a deeper level in these fanfics. For example, in many stories, he might write a song that expresses his feelings for her.
One common theme is friendship. Since Tikki is Marinette's kwami, many fanfics explore the deep bond between them. For example, how they support each other during tough times in Marinette's life as Ladybug.
There are also fanfictions with the 'first date' plot. Writers often explore how their first date would be. Would it be super romantic? Or would there be some comical mishaps along the way? It's a cute and popular plot that shows their relationship starting to develop in a more romantic way.
A common plot is the jealousy - driven bullying. As we know, Marinette is very talented in fashion and is also kind - hearted. So, other characters who are jealous of her might start to bully her. For instance, they could make fun of her clumsiness which is just a part of her charm. Another plot is the bullying related to her secret identity. If someone suspects that she is Ladybug, they might try to bully her to get information or just to mess with her.
The relationship with Adrien is a huge theme. It could be about how they navigate their relationship when this big change occurs. Some fanfictions show them having to grow up quickly and become more responsible for each other and the baby. It also might explore how their identities as Ladybug and Chat Noir play into their new family situation.