One plot idea could be that Lila tries to frame Adrien for something he didn't do, but Adrien manages to prove his innocence with the help of his friends. This would create a lot of drama and tension in the story.
Their relationship could be developed uniquely by having Lila actually start to feel guilty about her lies when she sees how kind Adrien is. She might slowly try to change her ways, and Adrien, being the good - hearted person he is, could help her become a better person. This would be a very different take on their relationship compared to the usual animosity.
Well, in Adrien Agreste depressed fanfiction, it often delves deep into his complex character. His depression could be due to his strict family life, especially his over - controlling father. Fanfiction writers might explore how he copes with his dual identity as a model and a superhero. They may show his isolation and how he tries to hide his true feelings from his friends.
The theme of unrequited love can also be present. He might feel that Ladybug will never truly love him for who he is, especially when he is in a depressed state. This adds another layer of sadness to his character and the story.
Marinette is often a popular character. Since she has a relationship with Adrien in the original series, in the fanfiction, she could interact with the sister in various ways. Maybe they become friends, or there could be some initial jealousy from Marinette if she thinks the sister is getting too much of Adrien's attention.
In many fanfictions about Lila and Adrien, their relationship can be quite complex. Sometimes, Lila tries to manipulate Adrien to get closer to his famous family or for her own gain. But Adrien, being the kind-hearted person he is, might initially be deceived by her lies, only to gradually realize her true nature as the story progresses.
One interesting plot could be the sister helping Adrien deal with his double life as a model and a superhero. For example, she might accidentally discover his secret identity and then work behind the scenes to keep it safe from Hawk Moth.
In some fanfictions, Lila's scheme against Adrien could be part of a larger plot. She could be working with an enemy of the Miraculous holders. Since Adrien is Chat Noir, she might try to expose his identity or put him in dangerous situations to further her own goals. For example, she could pretend to be in trouble to lure Chat Noir into a trap set by the villains she's allied with.
In many fanfics, female Adrien is portrayed as having a strong sense of justice, just like the male version. However, she may show it in a more empathetic way. For instance, when dealing with akuma - victims, she might be more in tune with their emotions and try to help them on a deeper emotional level. Also, her relationships with other characters, especially with Chloe, can be more complex. Since they are both girls, there could be more of a cat - fight - like dynamic in some stories.
One common plot twist could be that the kidnapper is actually someone close to Adrien, like a jealous acquaintance who wants to get back at him for some perceived slight. Another might be that Adrien has a secret power or connection that the kidnappers are trying to exploit. Maybe he has a hidden family heirloom that they think is valuable.