Another idea is that Adrien's mom was an artist who used her art as a form of magic. She created a world within her paintings, and when she disappeared, she was actually trapped in that world. Adrien stumbles upon this world and has to navigate through it, facing the creatures and challenges his mother created, all while trying to find a way to free her and bring her back to the real world.
In a fanfiction, Adrien's mom might have used the Peacock Miraculous to create something special. For example, she could have created a magical object that was meant to protect Adrien when he was born. But then, due to some unforeseen circumstances, she had to disappear. This would tie in the Peacock Miraculous with Adrien's backstory in an interesting way. The story could then explore how Adrien discovers this connection as he grows older and becomes more involved in the Miraculous world.
Perhaps in the fanfiction, Adrien's mom returns but has lost her memory. This would create a whole new dynamic. Adrien would be desperate to help her regain her memories. Ladybug and Chat Noir might get involved when they discover that Hawkmoth is also interested in her for some reason, maybe because her past holds a key to a powerful Miraculous. They would have to protect her while also trying to figure out how to restore her memory. In the end, her regained memories could lead to the discovery of Hawkmoth's true identity.
In an Adrien's mom fanfiction, she might have left behind secrets. For example, she could have hidden some important Miraculous or knowledge. The story could revolve around Adrien discovering these secrets and learning more about his mother, which in turn helps him in his battles as Chat Noir.
A plot could be where Adrien and Kagami start a fencing club together at school. They recruit other students and in the process, they grow closer. They face challenges like getting enough funding for equipment and dealing with a rival fencing club from another school. Through these experiences, their relationship deepens.
One idea could be baby Adrien discovers a small Kwami - like creature in the garden. It's not a real Kwami but has some magical abilities. And as he plays with it, strange and cute things start to happen around the house.
In the fanfiction, it could be that Adrien's mom had a special bond with the Peacock Miraculous. She was able to use it in a unique way that no one else could. But using it also put her in danger. When she had Adrien, she knew she had to protect him from the threats associated with the Miraculous. So she disappeared, leaving behind clues for Adrien to find when he was old enough. As Adrien uncovers these clues, he gets closer to understanding his mom's connection to the Peacock Miraculous and the secrets she held.
One plot idea could be that Kagami and Adrien are paired up for a fencing competition. During their training sessions, they start to realize they have more in common than they thought. Kagami begins to understand Adrien's love for freedom outside of his strict model life, and Adrien admires Kagami's determination. This could lead to a budding friendship that might turn into something more, with the added complication of Ladybug in Adrien's life.
One great plot idea could be a story where Marinette and Adrien are paired up for a school project that requires them to travel to a different city. This would force them to spend a lot of time together outside of their usual Parisian setting. They could discover new things about each other and grow closer. Another idea is a fanfiction set in a future time where they have both retired as superheroes. They start to reminisce about their past adventures and realize how much they've been through together, which reignites their feelings in a more mature way. And a third idea could be a story where they get trapped in an alternate dimension. There, they have to rely solely on each other to find a way back home, which deepens their bond.
One possible plot could be that Adrien has been secretly in love with Marinette for a long time but was too shy to confess. However, after seeing Marinette in danger during an akuma attack, he realizes he can't hold back his feelings any longer. So, he confesses his love right then and there. Marinette is initially stunned but then happily accepts his feelings.
One possible plot could be that Marinette, in an overzealous attempt to get closer to Adrien, creates a 'trap' of sorts. Maybe she arranges for a photoshoot at a location where only she and Adrien are present, under the guise of it being a school project related to fashion. She could have set up the set in a way that Adrien would be impressed by her creativity and they would have an extended period of time to talk and bond.