Interesting. Different but at the same time had a familiar feel but I can't put my finger on what books it reminds me of. If you enjoyed the Soul Screamers series as I did I think you will like this series. Souls play a big role in this series as well. 
 I loved the world building although it pushes a bit too far into religion for me. Even with the paranormal twist religion plays a major role. In this role demons began possessing people and they began eating the souls. Exorcism was proven and therefore the church took over power. With the church having power everyone has to follow the churches rules and they are strict! Sins are punished brutally. They even burned one teenager to death in front of the town. Parenting licenses are required to procreate. Souls have been decimated due to the demon attack so there are not enough souls to go around. An elder has to donate their soul for a child to not be stillborn. A lot of crazy stuff! 
 Nina is a year away from 18. She takes care of her younger sister since their mother has checked out and doesn't care for them much. She is willing to do anything for her sister. Then she starts questioning the church and everything that has happened after she sees Finn exorcise a demon that only church officials should be able to do. Finn was very intriguing. Not sure how I feel about him. I'm honestly not sure I could ever be with him personally but Nina is a pretty open person. Definitely want and need to learn more about him before I can fall for him but I do know he is a good person doing the best he can. I also liked all his rebel anathema friends. The ending is really only the beginning. Doesn't end on a huge cliffhanger. It was a bit too predictable for me. I wanted at least one revealing to be surprising but I predicted everything. Still enjoyable but I just wanted a little bit more. It is the first book and I know with the Soul Screamers series it just got better and better so the next book will hopefully blow my mind a bit more. 
 (view spoiler)[ So right from the beginning I totally knew Mellie was pregnant. Then I totally knew Finn traveled to different bodies. Then I knew her mom had been a demon all along and that demons were running the town and demons won the war not humans. It explained all the crazy rules and punishments. Then I totally knew Adam Yung was going to be burned at the stake. Which I was really sad about! Poor guy! Wish they could have saved him! A lot of this was probably not supposed to be a big shock but I would have liked a few twists. (view spoiler)[ (hide spoiler)] (hide spoiler)]