After the monster wave in the previous volumes, the city sets out to build a new outpost. In between training Akira joins the efforts of the city to raise rank in the hunter's guild. Here he meets old friends and rivals, especially while dealing with an underground monster infestation.
The post-apocalyptic world with its odd technology, Akira and Alpha are the draw of this series to me. I am especially intrigued by Alpha's motivation even though I feel the author is going a bit too much out of their way in depicting Alpha's actions in a negative way by for example using "spying" where "observing" would have worked just as well. The somewhat slow pace and slice-of-life parts of training are a plus for me, although there is plenty of action in the later 60% of the book for those who want that. I am not an overly big fan of Katsuya's sections, but that is more of a personal dislike to switching points of view. They do seem to serve a point in giving a more regular view on Akira, and I assume that group is going to fulfil and important role later on in the series.
All in all, a good solid read and looking forward to the next part of the series (and I hope this series reaches a natural end with a decent number of volumes unlike some other LN series).