A possible plot could involve the Dragon Kwami falling ill. In the Miraculous world, this is a big problem as the Kwamis are essential. Ladybug and Chat Noir team up with other Miraculous holders. They have to search for a special cure that exists in an ancient, hidden place. Along the way, they face many challenges and learn more about the Dragon Kwami's origin.
In a Kwami swap fanfiction, a possible plot is that the swapped powers start to have unforeseen side effects on the holders' daily lives. Ladybug, for instance, might find it difficult to balance her normal life with the new Kwami - influenced powers. Chat Noir could be in a similar situation. As they struggle to deal with these changes, they also have to figure out how to reverse the Kwami swap. Meanwhile, the city is in more danger than ever as they are not at their full potential, and this could lead to some intense and exciting battles and rescue scenes.
In a fanfiction, the Dragon Kwami could be a bit of an enigma. It might have some secrets that not even the other Kwamis are fully aware of. It could be silent most of the time, observing everything around it. But when it does speak, it says things that are very profound and thought - provoking. This kind of characterization would make the Dragon Kwami more mysterious and interesting in the story.
One interesting plot could be that Marinette - as - Kwami is accidentally discovered by Hawk Moth. He tries to capture her to use her powers for his evil plans. Marinette then has to use her wits and any new Kwami - like abilities she has to escape and warn Ladybug (who she can't transform into at the moment). This would create a lot of tension and action in the fanfiction. Also, it could explore how Marinette feels being in such a vulnerable state.
Well, a great plot twist could be in the relationship between Lady Noir and Chat Noir. Since the kwami swap, their dynamic might completely change. Maybe Lady Noir, with her new powers from the swap, becomes more dominant in their partnership, which could cause some tension or new levels of cooperation between them. Also, it could lead to different reactions from the villains who are used to their normal powers and interactions.
One interesting idea could be the different powers and personalities that come to the fore when the kwamis switch. For example, if Tikki and Plagg switched, Ladybug might become more mischievous and Cat Noir more rule - abiding in a very different way. It could also lead to new dynamics in the battles against villains as the heroes have to adapt to their new powers and instincts.
Maybe the Wolf Kwami has a special power that is different from the other Kwamis. A new villain wants to steal this power for their own evil plans. The story could focus on Ladybug and Chat Noir protecting the Wolf Kwami and its power. This would involve a lot of action and adventure scenes.
Let's make a Kwami named Luma. Luma could be a Kwami related to stardust. Its Miraculous could be a star - shaped hairpin. The superhero with this Miraculous would be able to fly faster than normal superheroes, and also have the ability to create a shield made of stardust that can protect from most attacks.
Well, this kind of fanfiction could start with Marinette making a mistake while using the Miraculous. Then she finds herself in the form of a Kwami. She might be really tiny and have to find ways to get around. She could hitch rides on people's shoulders or use her small size to her advantage when it comes to spying on Hawk Moth. And she would definitely have to deal with the fact that she can't just transform back into her normal self right away, leading to all sorts of comical and tense situations.
Another way is to have the Kwami OC interact with the existing Kwamis in the Miraculous Ladybug universe. If your Kwami OC is Ember, which has the power of fire, it could meet Tikki and Plagg. They could have a conversation about how their powers are different yet related. This kind of interaction can add depth to your fanfiction.
One common theme is friendship. The Bee Kwami often forms strong bonds with other characters, whether it's Ladybug, Cat Noir or other Kwamis. It shows how these friendships help in facing challenges in the Miraculous world.