I wish that I could 100% recommend this. The music was soul-wrenching and I found myself crying multiple times in the theatre watching. The animation is also incredible and the art-style really suits the story and characters. Belle especially and the world of U which is full of very unique and interesting characters and environment. However, my critique comes with the characters and the plot. Unfortunately Ryuu to Sobakasu no Hime wants to be too many things at once and wants to bring ‘awareness’ to so many things that it trips over itself and falls flat. Most characters are forgettable and it could easily be rectified by just combining some of the characters and plots instead of having a million red herrings in a movie that shouldn’t be a mystery.
TLDR: I would recommend this movie to anyone who just feels like crying and particularly enjoys good music and animation. I wouldn’t recommend this to anyone wanting a cohesive plot.