The Cue the Sun moment when Grunide is killed seems like just a dramatic moment... until you realize that it happened because BB Milfa sent his body into midair before it exploded, forcing a gap in polluted air.
Many Vandels have collecting habits. Some of them include stuff like collecting Dark Currency (at the expense of driving other Vandels deep into debt), collecting Saigas (involving a sort of suspended animation), and Grunide collects monsters. What about Vandels offscreen? Is collecting human body parts out of the question?
The Examiners. A person looks into your eyes and knows everything you've done? Also, somehow they know Kissu is a criminal even though most of what he's done is wear a cloak and scavenge ruins. This sort of implies a kind of Big Brother society where everyone knows what you've done even when your only known crime seems to have been going missing for a few years.