Emotionally, it would be a rollercoaster. Adam's friends would be distraught. Jay Halstead, for example, would be furious and would stop at nothing to find the person who shot Adam. The female characters might be more openly emotional, crying and praying for Adam's recovery. And the rookies in the department would look at the situation with a mix of fear and admiration for how the more experienced officers are handling the crisis.
One possible fanfiction plot could be that Adam Ruzek is on a routine patrol when suddenly he's caught in a crossfire. His partner races to his side as he lies bleeding. The team then has to scramble to find the shooter while also trying to keep Adam alive. They call in all their favors and resources, and in the end, Adam pulls through after a tense and harrowing surgery.
There's a possibility that it's a family member of a criminal she arrested. They might be seeking justice in their own twisted way. They could have been planning the attack for a long time, waiting for the perfect moment to strike when Burgess was most vulnerable. Another suspect could be a corrupt cop from another precinct who doesn't like the way Burgess and her team are cleaning up the streets and cutting into their illegal activities.
The other characters would be deeply affected. For Steve, it could be a huge blow as he and Danny are close partners. He might feel guilty for not being able to protect Danny. Chin and Kono would also be very worried. They would be angry at the person who shot Danny and be extremely determined to bring them to justice.
Family loyalty is a common theme. The sister might be shown as being very loyal to Ruzek, standing by him through thick and thin in his police work. Another theme could be protection. Ruzek might be protective of his sister, or vice versa, in the face of the dangerous world they live in because of his job.
For the other characters, it's a huge upheaval. If Reed is a popular figure among the colleagues, they would be devastated. The paramedics who attend to him would be under pressure to save his life. The detectives assigned to the case of who shot Reed would be working tirelessly. And the community that Adam 12 serves might also be affected. There could be an outpouring of support for Reed and the police department. The media might get involved too, putting additional stress on the characters as they deal with the public scrutiny while trying to focus on Reed's recovery.
I'm not sure of specific 'Chicago PD Ruzek sister fanfic' off the top of my head. But you could also try looking on fanfic forums. Sometimes fans discuss their favorite stories there, and you might be able to get some leads on good ones related to Ruzek's sister.
You can try websites like Archive of Our Own (AO3). It has a large collection of fanfictions from various fandoms, including those related to Adam Ruzek. Fanfiction.net is also a popular platform where you may find some good stories about him.
In this fanfiction, the baby might be a key to bringing some long - lost family members of either Kim or Adam back into their lives. The couple then has to deal with the new relationships while also taking care of their baby. They might also face some judgment from others about their relationship and how they are raising the baby, but they stay strong together and prove everyone wrong.
In a Conan gets shot fanfic, the characters around Conan would be in shock. For example, Ran would be extremely distraught. She might blame herself for not being there to protect him. The other detectives like Kogoro would feel a sense of guilt as well, thinking they should have been more vigilant. His friends at school would be very worried and might start to question the safety of their own lives. The emotional impact could also show in how they interact with each other. Ran might be more withdrawn and less trusting of others, fearing that they could also be in danger.
Her colleagues would be very concerned. Voight, as her boss, would probably be angry at the situation that led to her getting hurt and determined to bring those responsible to justice. Jay would be extremely worried and would likely stay by her side at the hospital as much as he could, constantly checking on her condition.