Another thing that could occur is that their relationship dynamic would completely change. Instead of the usual cat - and - mouse game between Adrien and Marinette (where Marinette is shy around Adrien), Adrien could be more open and direct with her. Since he knows her big secret, he might feel a stronger connection to her and try to get closer in a different way than before.
Well, he might be really surprised at first. Then he could start to see Marinette in a whole new light. Maybe he'll become more interested in her as a person, not just as a friend.
Maybe she was framed by an Akuma - influenced villain. In the 'Miraculous Ladybug' world, this is quite likely. Her arrest could be part of a larger scheme to distract Ladybug and Chat Noir. So, Ladybug might have to balance her superhero duties with clearing Marinette's name, which would be a really interesting plot twist.
They could also start training together more often. Since Adrien is aware of Marinette's identity, they can practice their superhero skills without the worry of revealing themselves. This would make them a more formidable team. They could learn from each other's strengths and weaknesses, and Ladybug and Chat Noir would be able to defeat akumas more quickly and efficiently.
There could be a lot of internal conflict. Marinette might be used to her shy yet determined self, and Adrien his more reserved but princely nature, and Luka his laid - back attitude. When merged, they'd have to reconcile these differences within the new entity. This could lead to a very character - driven story as they learn to function as one.
Another amazing one is 'A Different Perspective'. This fanfiction shows the story from Adrien's point of view. It gives new insights into how he sees Marinette and how his feelings for her start to change from just friendship to something deeper.
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.
In this fanfiction, Marinette and Tikki could be transported to an alternate version of Paris. Here, everything is different, and they have to find a way back. Marinette uses her wits and Tikki's knowledge to navigate this strange new world. They meet different versions of their friends and enemies, and through their adventures, they learn more about themselves and their relationship.
A good fanfiction in this regard should first have a believable character development. For example, showing how Marinette overcomes her shyness around Adrien gradually. Second, it should have interesting plot twists. Maybe something that makes their relationship take an unexpected turn. For instance, a new power or a new character that affects their dynamic.
Well, it could be a bit rocky at first. Adrien might be in disbelief and not know how to act around Marinette. But as time goes on, he could start to see all the times Marinette has shown the same qualities as Ladybug, like her courage and kindness. This realization would slowly bring them closer. For example, he might remember all the times Marinette has stood up to bullies at school, just like Ladybug does against villains. Eventually, they would have a deeper, more meaningful relationship.
Well, he could be there because of a fight with an akumatized villain. Maybe he got seriously injured during the battle and Ladybug had to rush him to the hospital. His identity might be at risk of being discovered if the wrong people see him in his vulnerable state.