For Aoba, you could explore his more vulnerable side. In the original, he's often shown as a bit of a troublemaker. But in fanfiction, we could see how he reacts when he's truly in over his head. As for Mikado, we can develop his leadership skills more. Maybe he has to take charge in a situation where Aoba is too impulsive, and this forces him to grow.
In fanfiction, Aoba's past experiences could be explored more to explain his present - day actions and how they relate to Mikado. Maybe he had a difficult childhood that makes him so protective of Mikado. For Mikado, his character can be developed by showing how he adapts to unexpected changes. For instance, if there's a sudden shift in power dynamics in Ikebukuro, how does he adjust? And how does this new - found adaptability influence his bond with Aoba? By exploring these aspects, we can deepen their characters and their relationship in fanfiction.
One idea could be a story where Aoba and Mikado have to team up to solve a mystery in Ikebukuro. Maybe there's a new gang causing trouble and they use their different skills and connections to figure out who's behind it.
There are also fanfictions that explore their backstories in relation to each other. Maybe a story about how Mikado first heard of Shizuo and was both intrigued and a little scared. As the story progresses, they could meet under strange circumstances and start to build a connection that was not originally expected in the Durarara series.
Fanfiction.net is also a great place to look. There are various categories and tags you can search through to find the specific aoba x mikado fanfiction you're interested in. Just be sure to use the right search terms to narrow down your results.
For Kyoko, she could be shown as more vulnerable in the fanfiction. Maybe she has a fear of heights and Yui helps her overcome it, which shows her growth. Yui, on the other hand, could be developed by showing her more impatient side when things don't go as planned during an event at school, and Kyoko is the one to calm her down.
There's also 'Mikado and Aoba: A New Bond'. This story focuses on them facing challenges together in a fictional world. It's detailed in how they support each other through tough times, which makes it an interesting read. It really builds on their characters and how they might interact in different situations.
For Nico, his past traumas and his connection to the underworld could be explored more deeply. He could be shown to gradually open up more about his feelings, especially to Jason. For example, he might share his experiences with loss and how it has shaped him. Jason, on the other hand, his sense of duty and leadership could be developed by putting him in situations where he has to make tough decisions. He could also show more vulnerability, like when he doubts his own abilities in the face of a very powerful enemy. This would make their characters more three - dimensional.
For Big Nate, his competitiveness could be explored more. In the fanfiction, he could enter a skateboarding competition, and Gina could be there to support him. This would show his determination and also how he reacts to pressure. His sense of humor could also be highlighted, like when he makes jokes to ease the tension during a difficult situation. As for Gina, her studious nature could be developed by having her tutor Big Nate in a subject he's struggling with. This would also show her patience and kindness.
The Durarara universe is already filled with so many complex relationships and subplots. When you focus on Shizuo and Mikado in fanfiction, it allows the author to explore new angles within this rich world. For example, they can be involved in the underground activities of Ikebukuro in ways that were not fully explored in the original series. This gives the readers a fresh perspective on the story and the characters.
For Kira, you can show his growth from a reluctant hero to a confident leader within the marriage. Maybe he becomes more assertive in his beliefs. For Lacus, her kind - hearted nature can be explored more deeply as she uses it to support Kira and their new family. She could also become more politically savvy.
In a fanfiction, Loki's personality could be developed through his relationship with Darcy. His arrogance could be tempered as he realizes Darcy doesn't fall for his usual tricks. He might start to be more honest and sincere. Darcy, on the other hand, could become more confident in her abilities. Her encounters with Loki, a powerful being from another realm, could make her realize she has more to offer than just being a sidekick. She could start to take charge in situations and use her intelligence in a more assertive way. This would change the dynamic between them and make their relationship more complex and interesting.