Kaschar’s Quarter (The Default King Book 1) by David Gowey

Matthieu Sartonné thinks he knows precisely where life will take him. However, like the rest of the world, he is not prepared for what will come next. Decades of fear and hatred have spilled over from the nearby city of Cyrnne. The armies of the Evangelical Brethren march under the sign of the falling star, destroying all in their path and bringing with them a deadly sickness, unlike…