His mortal demise

"Kochin is a heartsooth -- a rare being with the ability to heal any wound. Any wound, that is, except death. Intent on defying nature and bringing Nhika back to life, Kochin keeps her body in a life-preserving casket and waits for a miracle. Stricken with grief and descending into madness, Kochin realizes the answer to his desperate quest can only lie in one place: Yarong, the lush yet battle-ridden island the first heartsooths called home. Months later, Nhika wakes in a familiar manor-house, with Kochin nowhere to be found. As she traces his footsteps across Theumas, she discovers the haunting path he walked to bring her back, and a world changed by war. When Kochin discovers the true and grisly way to resurrect a person from the grave, he must decide exactly how much he is willing to sacrifice, in order to reunite with the woman he loves..."--