Some fanfictions could focus on their backstories. For example, a story that delves into how Antonio got into firefighting and how Brett overcame her initial fears in the job. Then, it could show how their different paths cross at the Chicago Fire department and how they gradually become important to each other, whether it's as friends or something more.
Fanfiction.net is also a good place to look. There are many fans who post their works there. However, the search function might be a bit trickier sometimes. You may need to use specific tags related to the characters like 'Brett', 'Antonio' and 'Chicago Fire' to narrow down the results.
Her close friends at the firehouse, like Casey or Severide, could be great allies. They've always been there for her, and during her pregnancy, they could offer practical help like covering for her shifts when she's not feeling well or giving her advice on dealing with the pregnancy while working. Stella could also be a strong ally as another female in the firehouse who can understand the unique challenges Brett might face.
A plot could revolve around Brett trying to hide her pregnancy at first because she's worried about how it will impact her career. As the story progresses, she realizes she needs the support of her friends and co - workers. There could also be a sub - plot about her partner's reaction and how they prepare for the new addition to their family.
Maybe in the fanfiction, the pregnancy could be a result of a one - time passionate moment between Brett and Casey. As they deal with the news, they start to plan for their future together. Brett might worry about how being a mother will affect her career as a paramedic, while Casey could be thinking about providing a stable home for his new family. Their friends at the firehouse could either be very supportive or there could be some drama among them regarding the situation.
Some fanfics focus on the challenges they face as individuals and how they support each other through those. For example, Casey dealing with his past traumas and Brett being there for him, or vice versa. There are also stories that explore their friendship evolving into something more romantic, with all the cute and angsty moments that come with it.
One possible scenario could be that during a rescue operation, there's a sudden collapse of a building. Brett might be in the wrong place at the wrong time and get hit by falling debris, injuring her leg or back severely. This would not only put her in physical pain but also cause emotional distress among her colleagues who care about her.
One great Chicago Fire crossover fanfiction could be the one where they cross over with another popular show like Chicago PD. In such stories, the characters from Chicago Fire might collaborate with the police in some high - stakes situations. For example, a fire might be part of a crime scene and they have to work together to solve the mystery and also deal with the fire situation.
The whole firehouse would be in shock. They would rally around her, taking turns to visit her in the hospital. Herrmann would likely bring her some of his home - cooked food to cheer her up, and the younger members would be eager to do whatever they could to help her recovery.
You can try looking on fanfiction websites such as Archive of Our Own (AO3). There are a large number of fan - created stories there, and you can search specifically for 'Chicago Fire Brett and Casey fanfic'.
There are several 'Chicago Fire Otis fanfic' that are worth checking out. For example, there is a fanfic that explores Otis's love for cooking and how he uses it to bond with his colleagues at the firehouse. This one has a lot of heartwarming moments. Another one is about Otis's adventures outside of work, like when he volunteers at a local community center. It shows his big heart and his willingness to give back. There is also a fanfic that focuses on Otis's role during a major disaster in Chicago, highlighting his courage and selflessness.