This is the second book in The Dreamblood duology by N.K. Jemisin. I really hope it won’t stay a duology, because I’d love to explore the world more, but if it is, then it’s a fitting end.
Gujaareh, the city of dreams, has been ruled for ten years by the conquering Kisuati after the schemes of the Prince fell through in the previous book. The Kisuati are cruel and forceful, and only the Hetawa and its Sharers, Sisters, Sentinels and Gatherers ensure that Gujaareh stays peaceful. But things are boiling under the surface and things are changing in the city. The barbarians, lead by exiled would-be-Prince Wanahomen keep raiding the city, there’s a female Sharer apprentice in the Hetawa though women are as goddesses and therefore shouldn’t do the jobs of men, and the people of Gujaareh are getting more and more frustrated by the behaviour of the Kisuati. War is brewing and an unstoppable plague spreads through the city of dreams, killing people horrible in their sleep.