I had so many problems with this volume. It's not a bad book at all, if you're a fan and you'd like to explore more deeply into the Underworld and what happened in all those years after the war, this is just perfect for you. These two volumes, 19 and 20 do explore a bit more, and apparently the idea is for the writer to eventually do a series for this, like with Progressive.
But we could've done without. I wouldn't have mind if these had been the first two books on a second expansion, this time on Alicization, because at least it would have given me the chance to decide if I wanted to read this or not. As much as I like SAO, I'm not reading Progressive because I'm not interested in dwelling more into Aincrad, and the same goes with the Underworld. There are some who'd love this, and some who won't. But having them shoved in between our main story feels like an intrusion, as if he wants me to care about this characters and this new plot just so I read the expansions.
Problem is I have to admit I've never liked Tiese and Ronie, I just can't relate to them. I only see them as Kirito's fans, they never developed enough in the previous books for me to care as individual characters and potential knights. And the fact that they are constantly reminding you how in love they are with Kirito or Eugeo doesn't help them. They can't let go of it and in this book I felt we were reminded constantly of their unrequited love instead of focusing on them growing as knights. Though that is certainly a very personal feeling.
There were other issues plot wise that probably shouldnt' have happened. For example, and keeping this spoiler free. I know Kirito and Asuna speak Japanese with a lot of English in between, because that's a thing. It's never been a problem before, and no one had a problem understanding them all through the Alicization arc. But suddenly, in this particular book, Ronie and Tiese are shocked every single time Kirito uses a 'sacred language' word and they keep asking their meanings as if they were only speaking English all of a sudden. And it's annoying because what it wasn't an issue before, suddenly is a big important thing that takes pages and pages to explain.
Kirito is also going back to the previous I-can-do-it-all attitude, he suddenly can do just about anything and as usual Ronie is so shocked with everything he does and how powerful he is. I get it, he has always been like that, this is nothing new, but Asuna is suddenly so weak and so behind him, and I can't buy it! She has a Goddess account, if anything she could do anything she wants, and her constant changes are very drastic. Asuna was a very powerful woman in Aincrad, and then became a damisel in distress in ALO, then she is back to being powerful and confident in Mother Rosario, and she comes and saves Kirito herself here, commanding a whole army, so it bothers me know that she is reverting again to a more passive role. She can do a lot, but she is letting Kirito handle most of it, when I know she could do it. I like more the confident Asuna, and I do hope we go back to her once we're back in the real world.
Lastly, what the hell was it with that dragon pov chapter? I know it was suppossed to be cute, it kinda is, but it was totally unecessary and if anything I would've loved this book to be shorter. There's tons of explanations in this volume that we don't need. It mostly felt like an exhausting read. For me, book 18 was the perfect closure to the Alicization series and I was ready to go with Alice into the real world, so this stalling has been particularly exasperating for me.