I worry the series lost its wit in its final entry.
It's not to say I didn't enjoy parts of this book, but it had all the stuff of a failure: undeveloped characters, a contrived plot (once again) filled with lazy explanations, and a weak end that leaves us in the same place as the start of the book.
But maybe I was too hard on the series. I was first sold by its promise rather than it's content.
This time, the group hops on a boat to travel to Japan, but they go through the Baltic Sea, which in no way attaches to Japan. For the entire book, they stay on the boat, while exploring some port cities along the way. They seemed to have suffered a mysterious collective illness that caused them all to forget why they traveled who's way, rather than heading south around Africa.
On the boat, they meet some interesting figures, and most exciting, hear stories about a mythical region that sounded quite like Japan.
The narrative is incredibly slow moving with the same gripes as the first: poorly handled trans-narrative I really wanted to support, characters operating like their country's caricatures, and conversations that leap from topic to topic, grazing the surface of insight from great writers and thinkers of history, without ever saying anything unique. I came into the series for its ruminations on linguistics, and although some interesting conversations occurred, it was stymied but a weak foundation.
When the story finally picked up around the 3/4ths mark, I had nearly convinced myself that it finally got its legs and was ready to impress me, only to fumble it at the end. I did, however, appreciate finally getting Susanoo's perspective. Lol he gay.
When it came to character's interpersonal relationships, it felt like everyone had been "reset" and no further development occurred. The first and second book had a complex nuance to Knut's involvement with both Hiruko and Akash, which was completely sidelined. Nothing further was explored between Nanook and Nora, despite their relationship deteriorating from the first book, and Nora started talking with a worker on the boat, which led to absolutely nothing.
Plus, the script seemed to have been lost with whether Japan was real or not in public consciousness. The first book went to great lengths to divise alternate etymologies for Japanese exports like sushi, while this boom casually mentioned Uniqlo as a potentially Japanese brand. This late in the series, I don't think the intention was to have the reader question the core plot.
Also, found it funny that basically all of them want to spoink Knut.