Arguably one of the most unexpected exits from One Chicago in recent years, a former Chicago Fire actor clarifies the real reason why he was written out in season 12. Despite an abbreviated run because of the dual Hollywood strikes of 2023, so much still happened in Firehouse 51 in the last year. There were internal fighting, weddings, and other family drama. Despite that, arguably the biggest talking point from Chicago Fire season 12 was how many people the show lost in just 10 episodes. One of those losses was Rome Flynn, who left after just a couple of outings.

https://screenrant.com/chicago-fire-season-12-rome-flynn-exit-rumor-response/