Most of Tsunekawa's works are short stories or novellas; several of his published volumes are collections of short stories linked in some way. This novel is similar in that it weaves together the individual tales of multiple characters, but is explicitly constructed as a unified work; the disparate elements meet at the end for a tense and satisfying finale.
Tsunekawa's standalone novellas are in-depth looks at a particular character or idea; his linked short stories are a series of glimpses into a hinted-at broader world. Kaminari no Kisetsu no Owari ni combines the best of both, introducing the reader to a deep and fascinating world.
The world itself hits a lot of good notes. It builds up old-school fantasy storytelling with hints of ancient myth and then contrasts and combines that with modern elements in a way that enhances both, while exploring human nature and the lengths people will go to to get what they think they want. If you enjoy Tsunekawa's mood and pacing, you'll love this book. Heartily recommended.
It sets in a town that is separated from the rest of the world. In this town, there is a thunder season between winter and spring, during which, people in the town may disappear. The story is narrated from the perspectives of 4 characters related to this town. This novel is probably the least satisfying read out of the 5 books that I have read so far by this author. The world setting is very interesting but the story is too loose and a bit lackluster when compared to his other works.