The Underworld fears him. One fairy makes him afraid of his own heart.

King Vaelroth is the most feared demon ruler in the Underworld. His enemies bow, his armies tremble, and even ancient monsters obey his command. But every moonrise, the mighty Demon King hides beside a silver lake, watching one lowborn fairy who has unknowingly captured his heart.

Lumi is not noble, powerful, or respected by the fairy court. With cracked wings and simple lake magic, she is treated as nothing more than a low-grade fairy. But to Vaelroth, she is the most beautiful creature ever created.

For many moons, he cannot find the courage to speak to her. He can rule darkness, command shadow-fire, and silence kingdoms with one glance—but he cannot say hello to the fairy who makes his immortal heart tremble.

When Lumi discovers the terrifying Demon King watching from the shadows, their worlds collide in magic, danger, awkward comedy, and forbidden desire. But love between a demon king and a lowborn fairy is forbidden by both realms. Fairy nobles want Lumi punished. Demon lords see her as Vaelroth's weakness. And an ancient prophecy warns that their bond could either heal the broken realms—or destroy them forever.

As trials rise, enemies gather, and war threatens the Silver Lake, Vaelroth must decide whether to protect his crown or risk everything for love. And Lumi must discover that the magic everyone called weak may be the only power strong enough to save the Demon King.

A romantic fantasy filled with moonlit magic, royal danger, action, comedy, trials, betrayal, and a love powerful enough to challenge two worlds.