A derogatory term for someone whose parentage includes an ariel and a human. Halfwings look like humans with stunted (half) wings. Because their wings aren't fully formed, they can’t fly.

Ariels are a race of humans with wings. They are basically angels but are neither magical nor divine.

Socially, Ariels look down on non-flying humans who in turn look further down on the abominations known as halfwings (ariel parent and human parent).

Blu is a somewhat rare luminscent mineral that many nations struggle to control. It’s an extremely profitable drug but has other spiritual and magical uses (cloaking/invisibility, gliding, etc.). Several fringe religions are based on the mineral and rumored to unlock its true potential.