Funnily enough, in a lot of early drafts of Errant, we started in the "Present" where Rekki is a jaded 24 year old knight, and then only later flashed back to show the events ten years prior.
After several drafts, I realised, it just wasn't working. Rekki was really hard to like and empathise with if you hadn't seen that she was actually a pretty good kid, Sarin is really hard to get into if she just turns up and you're told "she used to be Rekki's BFF" and her trauma was a lot less impactful if you hadn't lived it with her, and overall, it just wasn't starting with an exciting inciting incident.
So Errant starts with the prologue, a chapter that takes place 10 years before the main story, and then it skips forward to the "present" and reintroduces the characters. There are flashbacks along the way, but they're usually only a page or two long after the prologue gets all the big stuff out the way.