I had a lot of fun with this game, it's very relaxing. The art and music really standout, just look at some pictures and some of the soundtrack. It's very cool to just hear the sounds Fe makes when they learn a new language and that makes you want to play it more.
The gameplay is mainly there for you to experience the music and art, it's easy. That's a good thing, I like relaxing single player games. I didn't get frustrated at any time, the controls felt good to me. I did not run into any issues with the mechanics.
The story is shown indirectly through cutscenes and you have to piece it together yourself. It works well enough, but it could have been explained a bit further. The cutscenes don't show quite enough as I'd like, as they're a bit too abstract.
All the character designs are done extremely well. It's really cool to just look at the different animals and see what the designers did with them.
It's a great game if you want a relaxing game to play. I think it's very underrated because a lot of reviewers expected more focus on the gameplay, and that gives a very poor representation of what Fe delivers.