(no spoilers) Hearing that there was a lot lacking, I do feel that. Otherwise, the cinematography was gorgeous. The lighting hits a sweet spot. Ayano Go was great; I think this role definitely suits him.

The first half was great; it's pacing felt natural and I could easily follow the story. Second half felt a little strange. If I had to guess, this is where they cut a lot of original material.

(spoilers) The introduction and revelation about Nanako/Chihiro didn't have the impact that it should've, considering how important it is for our main character. And Manabu's past got covered within like the last 10 mins of the movie. This is something that you need to dedicate a whole episode for each character (ofc they couldn't do that). That's why adaptations are so tricky.