Genuinely the most disappointing game I've ever played. It promises so many things in the trailer but so little comes to fruition.
The gameplay is probably the best aspect of this entry, and it's not even that good. It's fun for a couple hours but starts to become repetitive and mindless. Having the game alter between two protagonists is also really annoying because you have to keep switching out your equipment.
The characters do not get any development, except for Chitose. Not the party nor the main antagonists, which are also just really boring and generic. They're barely present in the story and don't have any interesting dynamics with the cast, and the plot is as good as the antagonists.
Lastly, the ending is another beast of its own. I didn't think it was possible to write an ending worse than LAD7's but here we are. To keep it as spoiler free as possible: if you were interested in this game for the satisfying conclusion it promised, you'll be as disappointed as I was because there is no conclusion.
Everything is just kind of brushed off because RGG wanted to play it safe.

I do not recommend this game. It is seriously not worth the time or money and I regret falling for the hype and buying it day 1.