Maybe there's a plot twist where one of them loses their memory due to an akuma's power during the pregnancy. This forces the other to try and make the失忆的一方 remember their relationship and the impending baby. It can create a lot of heart - wrenching moments.
A rather interesting plot twist could be that they find out the pregnancy is part of an evil villain's plan. For example, the villain has somehow manipulated their DNA to create a super - powered baby that they want to control. This would lead to Adrien and Marinette having to fight not only to protect their unborn child but also the whole of Paris from this new threat.
It could also be about the challenges they face during the pregnancy. Marinette might have health issues, and Adrien has to be extra careful and supportive. There could be a lot of emotional turmoil as they both grow up faster than they expected. They might also face some judgment from society, but they stand strong together to face it all.
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.
Well, a great plot twist could be that Marinette has a secret identity as Ladybug, and she's worried that the arranged marriage will interfere with her superhero duties. So she tries to keep it a secret from Adrien, which leads to all sorts of misunderstandings. Adrien, on the other hand, might have his own secrets related to his father's business or his own hidden talents that come to light during the arranged marriage situation. And perhaps, there's a prophecy or an old family curse that is related to their arranged marriage. It could be that if they don't fall in love and stay together, something bad will happen to the city. This would add an extra layer of drama and urgency to their relationship.
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 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.
One interesting plot twist could be that the jealous kiss was misinterpreted by a third party, like Alya, who then spreads a false rumor about Adrien and Marinette being in a secret relationship. This causes chaos as they both have to deal with the unwanted attention and also their own confused feelings. Another plot twist might be that the jealous kiss unlocks a hidden memory for one of them, perhaps Marinette remembering a past life where she and Adrien were lovers, which adds a whole new layer of complexity to their current relationship.
One common plot is their married life dealing with superhero duties. For example, they might have to balance taking care of their family while still protecting Paris from Hawkmoth. Another plot could be them having a big wedding and all the drama that comes with planning it, like choosing the venue and dealing with their friends' different opinions on the matter.
In some fanfictions, there could be a curse. For example, Marinette is a mermaid who has been cursed to lose her voice if she doesn't find true love within a certain time. Adrien, a merman, stumbles upon her and tries to help her break the curse. Along the way, they go on adventures, exploring different parts of the underwater world, from hidden caves filled with treasures to dangerous areas where sea monsters lurk.
There are fanfictions where Marinette and Adrien go on a magical adventure outside of Paris. For example, they could be transported to a parallel dimension full of strange creatures. In these stories, their relationship often deepens as they face these new and exciting challenges together. Some fanfictions also delve into their family histories and how that affects their relationship as Marinette and Adrien.
A common theme is the 'love triangle' or rather 'love square' in the context of the Miraculous Ladybug universe. Fanfictions might focus on how Adrien's desire for Marinette is affected by other characters' relationships and feelings. Also, the theme of 'overcoming obstacles' is popular. It could be about how Adrien and Marinette overcome the challenges in their relationship, like the superhero duties and the secrets between them. This makes for some really engaging stories.