In many such fanfictions, Chat Noir might get hurt during a fight with a powerful akuma. Maybe he's outnumbered or faces a new and dangerous power. Writers often use this to create drama and show Ladybug's concern for him.
A common plotline is Chat Noir getting injured while trying to save civilians. He might jump in front of a dangerous attack aimed at an innocent bystander. This shows his heroic nature and self - sacrifice.
It can strengthen their relationship. Ladybug may become more protective of Chat Noir, showing a deeper level of care. For instance, she might be more hesitant to let him engage in battles until he's fully recovered.
One possible fanfiction could involve Chat Noir being akumatized after a major argument with Ladybug. Maybe he feels constantly overshadowed or unappreciated. The akuma could enhance his negative feelings, making him more aggressive and less in control. His powers might become distorted, and he could start causing chaos in Paris. Ladybug would then have to find a way to reach out to the real Chat Noir inside the akumatized form and purify the akuma.
One common plotline is that Ladybug has to take on a more challenging role in protecting Paris alone while Chat Noir is injured. She might struggle with the extra pressure and worry about her partner. Another could be Chat Noir dealing with his injury and trying to hide it from Ladybug so as not to worry her. For example, he could keep getting into dangerous situations while still hurt, thinking he can handle it.
One great Miraculous Ladybug Chat Noir x OC fanfiction is 'The New Hero in Paris'. It has an interesting OC who has unique powers and a great dynamic with Chat Noir. The story is full of action and mystery.
She would also be very determined to bring him back to the good side. Ladybug might search for a way to break whatever spell or influence has made Chat Noir evil. She could look for a special power - perhaps from another Miraculous or a magical item - that can reverse the change. And in the meantime, she has to be careful not to get hurt by Chat Noir while still trying to protect Paris.
Well, if Chat Noir dies in a 'Miraculous Ladybug' fanfiction, it could lead to a whole new arc for Ladybug. She might start to question her role more deeply. She could also be filled with guilt, thinking that she should have been able to protect him. And the other characters, like Alya and Nino, would also be affected. They might see Ladybug change in front of their eyes, becoming more withdrawn as she mourns Chat Noir. The balance between the Miraculous powers would be severely disrupted, and this could open the door for new villains or a change in the way the existing ones operate.
One interesting idea could be exploring different alternate universes where Ladybug and Chat Noir have different relationships. For example, in some fanfictions, they might have to deal with their identities being revealed in a more complex and emotional way compared to the original show. Another idea is the exploration of their powers in new and unique situations that the show hasn't covered yet.
First, create a well - developed OC. Give them a unique personality, backstory, and powers if applicable. For example, an OC could be a shy artist who discovers a new Miraculous. Then, focus on the relationship with Chat Noir. Build it slowly, like having them start as friends and gradually develop deeper feelings. Also, keep the tone and style similar to the original show. Use vivid descriptions of Paris and the action scenes.