To write a great fanfiction, study the existing Miraculous world. Pay attention to the rules of the Miraculous, like how they transform and what their powers can do. When writing about Marinette and Adrien, add some unique twists to their personalities. Maybe Marinette has a hidden talent that comes in handy during a fight. And don't forget to create a vivid setting, whether it's a new part of Paris or an entirely different location.
You can find a lot of fanfiction on Archive of Our Own (AO3). It has a huge collection of Miraculous Ladybug fanfictions, including many about Adrien and Marinette. Just search for the tags related to the show and the characters, and you'll be presented with numerous options.
I really like 'Adrien's Discovery'. In this fanfiction, Adrien starts to notice Marinette in a new light. He begins to see all the little things she does for him and how selfless she is. It has some really heart - warming moments, like when Adrien defends Marinette from Chloe's mean remarks. It's a great read if you want to see more of Adrien realizing his feelings for Marinette.
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.
There's also 'Marinette's Hidden Talents'. In this fanfic, Adrien discovers some unique skills that Marinette has been hiding. It's a really interesting take as it builds on their characters and the bond between them. It has a lot of cute moments and a bit of mystery too.
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.
First, know the characters well. Marinette is a complex character with her own strengths and insecurities. When writing about her with the Peacock Miraculous, think about how the power might affect her. For example, the Peacock Miraculous has the ability to create senti - beings. How would Marinette handle this new power? You could start with a simple plot, like Marinette finding the Peacock Miraculous in an unexpected place. Then, build on her journey to master the power. Include some challenges she might face, like hiding it from her friends or dealing with the side - effects of the power.
Once upon a time, Marinette and Adrien's big day finally arrived. The city of Paris was adorned with flowers and ribbons. Marinette, in her beautiful white gown, walked down the aisle. Adrien, looking dashing in his suit, had tears of joy in his eyes. Their friends and family watched with love. As they said their vows, the whole place was filled with an air of magic. And then they were pronounced husband and wife, sharing a passionate kiss as confetti rained down on them.
Then, show his unresponsiveness through the reactions of other characters. If Ladybug tries to talk to him and he doesn't answer or even blink, it emphasizes his state. You can also use dialogue from the other characters to express their concern and confusion about Adrien's unresponsiveness.
Begin by brainstorming ideas for their dates. It could be something simple like a coffee date or a grander event like a masquerade ball. You should also focus on their dialogue. Marinette might stutter a bit at first when talking to Adrien, but as they date, she becomes more comfortable. For Adrien, his lines should reflect his gentlemanly nature. In terms of the story arc, create some conflict. Maybe there's a jealous classmate or a new villain that tries to disrupt their relationship. But in the end, resolve the conflict in a way that strengthens their bond and shows the growth of their relationship.
You can try fanfiction websites like Archive of Our Own (AO3) or FanFiction.net. There are likely many fan-created stories about Adrien and Marinette sharing a kiss in the Miraculous universe on these platforms.