Toxic City: Walkers in the Mist by Dangel Angello

The world is now a savage place, where nature is caustic and mankind is deadly. In other words, survival is just another job. Post-apocalyptic London has dragged itself back to a form of civilisation in the shape of the Quads, ruled by the PEA and a proxy-government in hopes to stem unrest within the masses of Walkers that keep the Known World turning. But life is hard. The Agents are merciless, the Bandits are returning and the Mists weaponize the very air. But as one young resident finds out, when the few things you cling to are taken away, life stops being about living. For Val, that’s just not good enough.