Andrea Blythe’s review published on Letterboxd:
Fails in so many ways. In starts in the middle of a battle with Naraku, a sequence that would be entirely confounding for anyone who hadn't seen the show and is still confusing even having seen the show. The story doesn't get much better from there.
I also hated the animation. It's more polished than the series, but to the point of being detrimental. Some of the backgrounds are gorgeous, but I hate how glossy it makes the main characters look.