Quick Thought:
Very enjoyable movie; it was nice to get a look at the full trio in action.
Story:
This movie covers the group's stay with Bondrewd as they prepare for the next layer of the abyss. This means more insight into Nanachi's past, as well a new character Prushka (Bondrewd's daughter). The content is what you'd expect out of MiA: new areas and creatures, more secret's revealed about the abyss, and more of Bondrewd's gut-wrenching experiments. The few comedic moments were awkward as usual, but everything else was executed pretty well. Ending was good; it concludes this arc nicely while also building hype for the next season.
Character:
I liked Bondrewd's development overall. Some of it (physically) seemed a bit sudden/forced, but it was cool see more context behind his twisted mind. Prushka kind of got the short end of the stick though. Her backstory was heart-wrenching, interactions with the trio were sweet, but it sucks that she's basically just a plot device.
Enjoyment:
I thoroughly enjoyed this movie, and I think anyone else who has liked MiA up to this point will enjoy it as well.