To Kill a Kingdom (Hundred Kingdoms) by Alexandra Christo

To Kill a Kingdom is a dark fantasy novel centered on the story of Lira, a siren known as the “Prince’s Bane,” who has a reputation for collecting the hearts of princes. After disobeying her mother, the ruthless Sea Queen, Lira is transformed into a human as punishment and tasked with taking the heart of Prince Elian, a notorious siren hunter. Elian, who is also a pirate, dreams of ridding the seas of sirens. When Lira and Elian’s paths cross, they form an uneasy alliance, each hiding their true intentions. As they journey together, they grapple with trust, betrayal, and the question of what it means to be truly human. The novel explores themes of power, identity, and redemption in a richly imaginative world.