Perhaps there's a new character in the fanfiction who has a vendetta against Marinette. This character could have set her up, making up false accusations and getting her arrested. This would create a lot of drama and give the other characters a chance to show their loyalty to Marinette as they try to prove her innocence.
It could also be that Hawk Moth has a new scheme. He might have manipulated the situation to make it look like Marinette is a threat. He could have planted false evidence or used an Akuma to make someone accuse her, all in an attempt to get to Ladybug.
In fanfiction, Marinette's strength can be seen in her leadership abilities. Even though she's young, she has to lead in battles against akumas. She makes quick decisions that often save the day. For example, she decides which strategy to use against a particular akuma, whether it's to attack head - on or find a more strategic approach.
Physically, Marinette's strength as Ladybug can be explored in fanfiction. She has to be in good shape to perform all those acrobatic moves while fighting akumas. Fanfictions might depict her training hard in her spare time to improve her physical strength. For instance, she could be shown doing parkour in the city at night to practice her agility and build up her leg muscles for those high jumps she often does during battles.
A simple reason for Marinette's depression could be the stress of her double life. Juggling school, friends, and being Ladybug is just too much for her, so she gets depressed.
There are many interesting aspects in fanfictions regarding Marinette's armor in Miraculous Ladybug. One possibility could be that the armor gives her enhanced powers, like being more resistant to akuma attacks. Maybe it has special designs that are related to her Ladybug identity, with red and black patterns that are more intricate than her normal suit.
One possibility could be that in the fanfiction, all of Marinette's friends plan a huge surprise party for her. They decorate her room with pink and white balloons, her favorite colors. Alya might be in charge of inviting everyone secretly, while Adrien brings a special, handmade gift that he's been working on for weeks, showing his deep affection for Marinette in a way that's still in - character for the show.
One possible scenario could be that Marinette gets injured during a fight as Ladybug and is rushed to the hospital. In the fanfiction, her friends might come to visit her, and there could be some sweet moments between her and Adrien as he's worried about her. Maybe she has to keep her identity a secret even while in the hospital, which adds an extra layer of tension.
There's also 'The Luka - Marinette Connection'. In this fanfiction, the connection between Luka and Marinette is explored on a deeper level. It starts with Luka noticing Marinette's little quirks and how she tries to hide her feelings. As the story progresses, they start to open up to each other more. The author creates a really engaging story by adding in some mystery elements related to the Miraculous and how it might affect their relationship.
One great fanfiction could be about Marinette getting the Peacock Miraculous in a unique situation. For example, in a world where all the Miraculouses are scrambled among the characters, Marinette discovers the Peacock Miraculous while on a solo adventure. She has to figure out how to use its powers, which are different from the Ladybug Miraculous she's used to. This could lead to some really interesting character development as she tries to master a new set of abilities.
One possible fanfiction could be about Marinette transforming into a mouse - themed Miraculous holder. Maybe she discovers a new mouse - themed Miraculous in a hidden part of Paris. This could lead to her having new powers like super - speed and the ability to fit into small spaces. She could use these powers to outwit Hawk Moth's akumas in a really unique way, and her relationship with Adrien might also take an interesting turn as she tries to keep her new identity a secret from him.
In Miraculous Ladybug fanfiction, Marinette in a bikini could be part of a beach - themed story. Maybe she's on vacation with her friends. It could be a fun and light - hearted scenario where she shows off her confidence and style while enjoying the sun and sand.