A different take could be a time - travel fanfiction. Marinette gets sent to the future and finds out she's pregnant there. She has to figure out how she got there, who the father is (even though it might be obvious), and how to get back to her own time while also dealing with the pregnancy.
One idea could be a story where Marinette discovers she's pregnant unexpectedly. It could focus on her initial shock and how she decides to tell Adrien. Maybe she's worried about his reaction and how it will affect their relationship and their superhero lives.
Another fanfiction could be set in a future where Marinette is happily married to Adrien and they are expecting a child. It could show their preparations for the baby, like decorating the nursery and all the cute moments of them shopping for baby stuff together.
One idea could be that they face challenges in their superhero lives while being pregnant. For example, they have to keep their identities secret even more carefully to protect their unborn child. Another could be that they discover new powers related to the pregnancy, like a connection between the baby and the Miraculous.
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.
Marinette might develop more empathy. Going through pregnancy gives her a new perspective on life. She may understand the struggles of others better, like those who are vulnerable or in need of protection, which could influence how she acts as Ladybug.
A really interesting fanfiction idea could be that Lila and Marinette switch personalities for a day. This would be a comical yet thought - provoking situation. Lila would have to deal with Marinette's responsibilities and kindness, while Marinette might struggle with Lila's devious ways. It could lead to both of them having a new perspective on each other.
One idea could be that they are modeling for a high - fashion charity event. Marinette is nervous at first but Adrien's calm presence helps her relax. As they pose together, they start to realize their feelings for each other are growing deeper. They share some cute glances and little inside jokes during the photo shoot, which makes the pictures turn out even more amazing.
One plot idea could be that they discover they're pregnant unexpectedly. Maybe they're still in high school and have to deal with the reactions of their friends and family. Their friends could be initially shocked but then become very supportive. Another idea is that an akuma attack somehow affects the pregnancy, adding a layer of danger and drama.
One idea could be exploring how Marinette balances her superhero duties with her pregnancy. Maybe she has to be more cautious during battles, and her partner Chat Noir has to be extra protective. Another plot could involve her friends and family finding out. Some might be overjoyed while others could be worried about how she'll handle it all.
One idea could be that Adrien initially feels shocked but also a sense of relief. He might have always had a feeling that Marinette was special, and now it all makes sense. So he starts to view her in a whole new light, with more respect and admiration for her dual identity.
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.
One possible plot could be Marinette struggling to raise the baby on her own while dealing with the heartbreak of Adrien leaving. She might find support from her friends like Alya, who helps her through the tough times. Meanwhile, Adrien could be off on some self - discovery journey and later realizes his mistake.