Fantastic game - the story goes in a very unexpected direction, the characters are great, the bonds are nice to sit through, the gameplay is incredibly fun (even some of the endgame combat does get a bit dull), and brain crush was always satisfying to watch.
My few complaints are just that the sidequests are frustrating, especially the ones where you have to make sure you land the finishing blow on a specific enemy with a specific move, several moments could've been avoided if the characters just talked to each other (which Yuito pointing out doesn't exactly help), and Brain Field takes way too much time to build up considering the fact it resets upon going to a new area and there's no way to tell how long or short a battle will be.