The Iron Harvest. The Rotting Garden, #2

She saved his life. He lost her heart. Niara Vane and Kaelen Thorne have escaped the ruins of the Glass Orchard, but they have traded one cage for another. Bound by a magical suture that links their nervous systems, they must navigate the Dead Lands and infiltrate Ferro-the city of gears, smoke, and the Iron King. In Ferro, emotions are not just currency; they are fuel. The King strips his subjects of their feelings to power his machines and his terrifying Hollow Army-soldiers who know no fear and feel no pain.
When Kaelen is captured by the Iron General-a ghost from his past with a face he knows too well-Niara is forced to make an impossible choice. To save the man she loves from being erased, she must become a weapon. She must dive into the city's black market and trade the one thing that keeps her human:Her love for him. Now, the Iron Harvest has begun. The army is marching. And Kaelen must fight not only to save the world, but to remind the woman standing beside him why she fought for him in the first place.
The second installment in the Glass Orchard trilogy is a heart-pounding journey into a world of industrial magic, where the only thing more dangerous than feeling too much... is feeling nothing at all.