The Jonah Chronicles: The Seal and The Sword - One promise, Two worlds, An endless darkness #974336

Between the Two Moons
A carpenter who does not know he is a hero. A girl who guards the heart of the universe. A hill that hides a millennial secret. When Elias and Amalia cross the threshold between worlds, they find not only a forgotten war, but the echo of a love that forged the stars. Amidst opalescent moons, ebony wildwoods, and demons made of ash, they must discover that the most powerful magic lies neither in the Sigil nor the Sword, but in the bond that unites them. An epic odyssey concentrated into a single breath. A dark tale about the power of sacrifice and the immortality of the heart.