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.
Another plot could involve Chat Noir being akumatized by an akuma that was specifically designed to target him. Hawkmoth could have studied Chat Noir's behavior and weaknesses. Once akumatized, Chat Noir could start to turn Paris against Ladybug. He could spread false rumors or use his charm in a negative way. Ladybug would then need to prove her innocence and save Chat Noir from the akuma's control. This would require her to dig deep into their relationship and find a way to reach the real Chat Noir.
In an akumatized Ladybug fanfiction, the akuma might enhance her powers in unexpected ways. For example, her Lucky Charm could become a more powerful and unpredictable object. Her akumatized form might also have a darker and more menacing look, perhaps with a more aggressive fighting style. Writers could explore how the heroes and villains interact with this changed Ladybug.
In a fanfiction of this kind, the akumatized reader could be a huge fan of Ladybug, but after being rejected one too many times when trying to offer help or get an autograph, they get akumatized. Their akumatized form might have powers related to disappointment, like creating illusions of the worst - case scenarios for Ladybug and Chat Noir, making their battles more difficult. To defeat this akumatized reader, Ladybug and Chat Noir would need to show the reader that they do value their support.
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.
One possible story could be that Adrien gets akumatized because he feels constantly overshadowed by Ladybug. In this fanfiction, Hawkmoth might prey on his insecurities. As an akumatized form, Adrien could have enhanced physical abilities like super strength and speed. His akumatized look might be a dark version of his Chat Noir costume, with a more menacing appearance.
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.
Ladybug would be extremely shocked and heartbroken. She has always seen Cat Noir as her partner and friend, and to see him akumatized would be like losing a part of herself. She would be determined to save him at all costs, trying to find a way to communicate with him beneath the akuma's influence.
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.