Sean Summ’s review published on Letterboxd:
I think this film probably has a few too many teeny anime tropes for me to fall in love with it conditionally, or view it on quite the same level of art as a Miyazaki or Kon film (there are several J-Rock montages for godsake). The concept, and for the most part, the execution, is wonderful. It took a little while to get into and although the concept starts out interesting, it's hard to see where it's going. But as things slowly start unravelling I really got sucked into the sweet, heartfelt ride with some really emotional moments and even some exciting and tense ones. The animation can get really stunning, especially when the the celestial stuff is involved. The characters eventually become endearing and their struggles worth rooting for.
No doubt, the freshest take on a love story I've seen in a long time.