Us vs Wilder

Humans have warred with the Wilder for two-and-a-half million years. They have tried to control it, almost wiped it out, and squished it beneath their boots several times over. The thing is, the Wilder doesn't want to die. It won't. It's survived ice ages, super-volcanoes and even asteroid strikes. It's not going to let some measly, hairless apes be the end of it. So it's evolved. It's fought back. Every time humans have tried to get rid of it, it's come back ten times stronger.
And finally, it's winning the war.

Echo, Lan, Song and Aeryn are all just trying to figure out how to survive in a world so hostile to humans. They haven't had much experience- none of them have been alive for more than eighteen years. Some of them haven't had anyone to teach them how to navigate all the deadly predators and, you know, not put the toxic stuff in their mouths.
Echo hasn't talked to anyone for six years. Lan is clumsy as hell when he's around new people. Song is about as social as a crocodile. And Aeryn-
Well, Aeryn's just Aeryn.
This can only go well.
~~~~~
Just so you all know, this is not intended to be a romance or sexual story. It is purely meant to be Y/A sci-fi/dystopia type stuff. There will be a little romance probably, but nothing super important or major.

Possible trigger warnings: some swearing and violence, deaths (later, haven't quite written these bits yet). Nothing graphic. There is some romance but nothing sexual.