The Siblings

At just 12 years old, I was an outcast. Sent away to live in the lands outside of the city wall, survival had become a game. Little by little, more and more children joined, sent away by the city. They called us The Siblings.
Six years later we had created our own life. A place where we weren't controlled, where we had freedom, unity even.
Until the city found us.
***
Cass had always been a leader, having been forced out in the hopes that she would die, she had grown up much faster than expected. Now a leader of a whole army of outcasts, there's only so long before the city realises that their plan has failed. But Cass isn't sure if she is ready, and after a warning from a rather attractive guy, she must do all that she can to survive.

Thanks to @PMStephens for the beautiful cover! You're awesome!