Michelle Andrews, younger sister to the late Fred Andrews, aunt to Archie Andrews, surrogate aunt to Reggie Mantle, Nathan Scott and Lucas Scott and mate to Matthew Casey, Kelly Severide and Jay Halstead. What happens when the three meet their mate at a school trip?

In which, former high school sweethearts get entangled in each other's lives with the possibility of igniting an old spark.

Will and Jay Halstead lead normal lives, or so they thought. What will happen when a 15 year old girl shows up at Chicago med injured? Is she really as much of a stranger as she seems? - Halstead Brothers

Amelia Brett is the older sister of Sylvie Brett who is the new paramedic at Firehouse 51. Amelia thought she was just coming to be closer to her sister and to start a new life outside of Indiana. But one thing she never expected, was to fall in love with a firefighter. Disclaimer! The timeline of CF will be made to fit this story.

Crossover with One Chicago, Blue Bloods, Hawaii Five-O and 9-1-1. Kelly Severide gets adopted by Christopher Herrmann at the age five after he watched his biological Mother Jenifer Severide get killed and two weeks later his biological Father Benny Severide dies in a Fire. Kelly has bad anxiety and Allergies, he also has Asthma and Autism. He will also get Migraines, if he gets too stressed, and when his anxiety gets bad. Also he is highly allergic to certain medicines and foods. The only people who know about his Allergies, Migraines, Autism and Asthma are Matt Casey, the Herrmann Family, the Reagan Family, Will Halstead and Jay Halstead. Cindy, Christopher and the Herrmann Family know Matt and Kelly are dating. Also the Herrmann family is overprotective of Kelly Severide. Once Christopher Herrmann adopted Kelly, they changed his name but he kept most of it. All they did was add Christopher and Herrmann. So Kelly's full name is Kelly Benjamin-Christopher Severide-Herrmann, but at the Firehouse it is just Severide. So this one will also Crossover with The Secret Military Team(One Chicago & Blue Bloods), as the fact that Christopher Herrmann is Kelly Severide's adopted Dad. It will also Crossover with my Hawaii Five-O One-Shots and Short Stories.

Detective Logan Rayner, a 24 year old woman from Chicago, Illinois has been in the Special Crimes Unit at the 31st district for a year and a half with her partner, Mark Fuller. One day when she gets called on a case that has to do with a truck filled with dead foreigners she gets reunited with her childhood friend, Lieutenant Kelly Severide from Firehouse 51. From that meet on, Kelly tries to figure out why she stopped talking to him for a year. kelly severide x oc

Sky is a girl who works at Firehouse 51 whit everyone she loves and care for, but what will happen when someone from the past makes their way back into her life and what will happen when she finds out that she maybe fell for the wrong one? Follow her journey to find out

"Happiness can be found in the darkest of times if one only remembers to turn on the light." Chicago was supposed to be a fresh start for her, but when her abusive ex catches up with her she finds her fresh start and her new relationship are in jeopardy, along with her life. She's drowning, and just maybe he'll be the one to rescue her. (Severide X OC)

Gracelyn Casey is lieutant Matt Casey's little sister. Matt wants to protect his little sister from danger at all cost. What happens when Gracelyn becomes a detective for the 21st precinct (Edited Version!!!!!!!) -Updates Every Thursday-