Celestial Bodies: The Sun Serpent's Daughter

This high-stakes fantasy romance offers a unique take on star-crossed lovers amidst a one-of-a-kind magic system with a diverse cast of characters, including a Black heroine and a deaf male love interest.
 
The princesses of House Sun are not known by name or face. They are known only as vipers—nine deadly assassins who live in service of The Serpent. Celeste is the last viper to be dispatched, and her mission is critical: infiltrate the Lunar kingdom and eliminate The Demon Prince. Simple. Except Apollo Alceline is unlike any target she's faced before.
 
Apollo knows the lethal consequences of The Serpent’s bite all too well. It cost him his mother, his hearing, and his father's sanity. Now, on the eve of his coronation as king of the Lunar kingdom, Apollo is determined to fulfill his father's dying wish—to see The Serpent burn. So when a beautiful viper, dangerous and cunning, is thrust into his lap, he knows he cannot let her linger. But as Celeste spends more time in the shadows, Apollo finds himself desperate for a taste of the light.
 
The fight for the celestial planes has reached a fever pitch. Apollo and Celeste stand at the center, orbiting the inevitable collapse. But before the sun eclipses the moon, they must decide where their loyalties lie—to their houses or to each other.