Realmfall

It was three months later when everything got turned on its head. Now there are rifts appearing out of nowhere, her portal is destroyed, and her brother is about to do something he'll never be able to take back.

It was three years and everything was falling apart. His world is in ruins, he's alone and running for his life, there's a war going on, he hasn't seen the sun in months, and the kid he's been taking care of went nuts and is trying to tear apart the dimensions

A sequel to Desert Kings! This won't make any sense unless you've read Desert Kings! (Like 0 sense, at all)