I liked the music and the limited (small) open world quest design. I didn't like that overworld progression was behind arbitrary species captures, so maybe look up which beasts to catch for those.
The rock paper scissors effective damage thing is replaced with bespoke status effects, with a net result of a much shallower battle system. The fusion mechanic works but also feels a bit shallow eventually.
The story has a lot of variety in tone that I feel would be polarizing... I personally liked it.