Adulthood is about experience more than age
Two groups of young teens, one Real, one Unreal, are set on a collision course in a postapocalyptic world. The Real world is scarcely survivable, but some hang on. The Unreal world hides truth in an augmented virtual unreality.
Their isolation and lack of experience make them seem childlike in some ways, but in others they are very capable. And then there's the matter of self-confidence.
The story swaps between the viewpoints of two girls: Mila the Real, and Channel the Unreal. Each has two develop relationships across their various divides. Each has to develop leadership and recognise their skills, and come to grips with their failings.
I did get confused at times, and have to stop and figure out who I was in this PoV, and at times I wa frustrated by their immaturity. I didn't find the story totally gripping and got distracted on to other things, and took a break between books. So it took me a lot longer to read than I'd normally expect. And this is despite the minor cliffhanger at each change of Point of View.
Still there is a solid plot with some nice twists as the pace picked up at the end of book 4.
There is some good tension and dillema and self conflict, but the individual characters were not as individual as I'd like, though the lead characters did show some development.
Overall a pretty good read, especially for early to mid teens