Weird article. It’s been a very long time since I’ve read the book, but I was pretty sure the series ends up exactly where the book did to the letter, yet the article claims the series ends before. In fact, the vision of the Sekigahara showdown was probably added to make viewers understand what it was about, as the book kind of treats it as an afterthought like the reader already knows where this is going.

It also claims Tokugawa won with the smallest amount of bloodshed, which is weird since Sekigahara is up there in the number of dead people in a single day in all of recorded History. It may have been less than the alternative, but it’s just an odd and wrong comment to make about that battle.

As for a second season - I don’t even know what it would be about, because contrary to what the article says, there’s not much else of interest after that, it’s only Shimabara and the battle of Osaka (and I guess Sekigahara too). The former could conclude the religion topic of the series, but neither would have much to do with the level of intrigue that the book focused on. A second season would mostly be lots of battlefields. Maybe to throw a bone to the people who didn’t know about the book and expected just that, why not? Everything the book didn’t do.