Voidwalker

Fionamara "Fi" died once already, and it left her able to see into the Void, the space between dimensions where the daeyari — immortals who feed on human flesh — cross over under an uneasy truce with humanity. Fi makes her living smuggling stolen magic between worlds, but a job for an old flame drags her into a bombing and a coup inside the daeyari capital.

Betrayed and offered up to Antal, the daeyari overlord she unwittingly helped attack, Fi strikes a bargain with him instead: find who really set the bombing in motion, and help him reclaim his city. What starts as a survival tactic curdles into something far more dangerous between them. The first book in Beasts of the Void, a dark, high-stakes romantasy.