A Soul of Ash and Blood by Jennifer L. Armentrout — book slip

A great primal power has risen, and the Queen of Flesh and Fire has become the Primal of Blood and Bone—the true Primal of Life and Death. As gods awaken across Iliseeum and the mortal realm, Casteel and Poppy's battle intensifies.

But when Poppy falls into stasis, Casteel faces the possibility of losing her forever. Advised to talk to her, he recounts their journey, revealing secrets only known to Kieran.

As he waits for her to awaken, the realm and their lives hang in the balance.

For fans of Sarah J. Maas and Laura Thalassa.