Blade of Dream — Daniel Abraham

From the New York Times bestselling author and co-author of The Expanse comes an "atmospheric and fascinating" novel that unfolds within the walls of a single great city, over the course of one tumultuous year (Joe Abercrombie, author of A Little Hatred).
Kithamar is a center of trade and wealth, an ancient city with a long, bloody history where countless thousands live and their stories endure.

This is Garreth's.
 
Garreth Left is heir to one of Kithamar's most prominent merchant families. The path of his life was paved long before he was born. Learn the family trade, marry to secure wealthy in-laws, and inherit the business when the time is right. But to Garreth, a life chosen for him is no life at all.
 
In one night, a chance meeting with an enigmatic stranger changes everything. He falls in love with a woman whose name he doesn't even know, and he will do anything to find her again. His search leads him down corridors and alleys that are best left unexplored, where ancient gods hide in the shadows, and every deal made has a dangerous edge.
 
The path that Garreth chooses will change the course of not only those he loves, but the entire future of Kithamar's citizens.
 
In Kithamar, every story matters -- and the fate of the city is woven from them all.