Writers often describe their emotions as intense and passionate. Marinette might be described as feeling a mix of excitement and nervousness. For instance, her heart could be racing as she leans in to kiss Cat Noir. Cat Noir, on the other hand, might be portrayed as confident yet also having a sense of vulnerability in that moment.
Some writers will detail their emotions in a more complex way. Marinette might initially feel guilty because she has her normal life and responsibilities, but in that moment with Cat Noir, all those concerns fade away. Cat Noir could be experiencing a sense of urgency, as if every moment with Marinette is precious and he wants to make the most of it.
Another storyline could involve a situation where they are forced to hide their feelings in public but when they are alone, like in an abandoned building that they've made their secret hideout, they engage in making - out. It adds an element of secrecy and excitement to the story.
There's also 'A Kiss in the Rain' which is quite well - loved. In this story, the setting of the rain adds a lot of romantic tension. It shows how their relationship develops to the point of that kiss in a very natural way. It also has some really sweet dialogue between Cat Noir and Marinette that makes the kiss even more meaningful. The story goes into their insecurities and how they overcome them to reach that moment of closeness.
One common theme is the discovery of their true identities. Since they don't know each other's secret identities in the show, a lot of fanfiction focuses on how they find out about each other. Another theme is their relationship development, from friends to something more romantic.
One interesting Marinette and Cat Noir fanfiction could be where they have to face a new villain that has powers they've never encountered before. In this story, Marinette might struggle with her identity as Ladybug while also dealing with her feelings for Cat Noir. Another could be a time - travel fanfic, where they go back in time and meet their predecessors as superheroes.
One popular scenario could be during a battle where they are about to be defeated and in a moment of desperation and realization of their true feelings, they share a kiss. This kiss might give them a sudden burst of power to defeat the villain. Another could be at a school dance. Marinette is hesitant at first but Cat Noir sweeps her off her feet and they kiss under the twinkling lights. And there's also the scenario where they are alone on a rooftop, looking at the city, and the atmosphere just leads to a tender kiss.
Some Miraculous Ladybug fan communities on Reddit could also be a good source. Subreddits dedicated to the show might have threads where fans discuss and share their favorite fanfictions that involve Cat Noir and Marinette kissing. You can ask in those communities as well if you don't immediately find what you're looking for.
In some fanfictions, Cat Noir's reaction is more complex. He is excited to know but also realizes the great responsibility that comes with this knowledge. He becomes extremely protective of Ladybug's identity. He might start to distance himself a bit in order to not accidentally give away her secret. At the same time, he has to deal with his own feelings for her which are now even more intense since he knows who she really is.
No, it is not appropriate. 'Miraculous Ladybug' is a popular animated series aimed at a wide audience including children. Writing sexual fanfic about the characters goes against the family - friendly nature of the show and can be considered inappropriate and disrespectful to the original work and its fans.
You can start by looking on fanfiction websites like Archive of Our Own (AO3). It has a large collection of Marinette and Cat Noir fanfictions, with different tags to help you find exactly what you're looking for, whether it's a specific genre like romance or action, or a particular plot type. Another option is FanFiction.net, which also has a decent number of stories in this fandom.
They often use words like 'electric', 'fiery', or 'intense'. The emotions are described as overwhelming, like a tidal wave crashing over both of them.