In the early 1900s, the nation of Aetheri came out of its long interdimensional isolation and revealed to the humans of the Symphony Archipelago that they were not alone in the multiverse. Things swiftly got ugly after that.
In the early 1990s, Aetheri's leadership changed, and in the Archipelago, a tiny broken family of half-siblings banded together in the face of the bile and hate that was boiling up between the humans and the non-humans.
In the early 2000s, that family was split apart. Hawk Press and his sister Liya Kiski both begin a long and exhaustive journey towards understanding the difference between friend and enemy--and between the family you're given, and the family you make.
The girl at the streetcar's controls slumped in her seat, weak with relief that the winged demon hadn't hit the cables. THAT would have been hard to--
"OI!" someone shouted, and she sat bolt upright again, forgetting the emergency brake.
A horse leapt into the road.
It was a huge, black draft horse with white eyes like headlights. It had to snake around the front of the slowly-moving cable car, and she could have sworn she heard it mutter 'oh Jesus' tersely as it went. She stared as it gathered itself and hopped effortlessly over the blue car passing in the opposite lane, hooves neatly clearing the roof. And then, just in case she didn't think she was crazy enough, it opened its mouth and shouted after the winged demon, "Wait!"