Guardian of the Onyx Empire — Vanessa N. Gilfoy

Lizeria flees her mother's crumbling empire. As she stumbles through the nearly demolished Kingdom of Vinn, the mouthwatering Alexander Rey tempts her with other plans. If she'll be his and his alone, he'll train her to raise the Onyx Empire from its ashes and defeat the wizards.Though he claims to be human, he moves like an elf. He seduces her and says he's her fated, but he can't be. Electric sparks don't pass from his skin and mind shields prevent her from reading the truth. She'll have to grow stronger to break him, but that means learning elven king's magic from Alexander's cursed blackstones.