A Star so Bound and Broken - Stardust Trilogy, #1

Free the stars. Break the chains. Jorrin has only five days to find his missing friend. But it won't be easy to find a lost star in the dangerous city of Bash-al Feret, ruled by Rahim Padishah, the immortal ruler who hungers for stardust. His reckless search brands him a slave and brings with it a fatal consequence: the stars he fought so desperately to protect are now within the padishah's grasp. Nouri Shah lost his brother long ago.
But when he discovers that Rakhshan is alive and their father has finally hunted him down, Nouri must face the past that he's run from for years. With war looming on the horizon, he must make a difficult choice-to save his brother or his people. Jorrin can't escape the voice inside his head, and Nouri can't escape his ghosts. Both find themselves on a dangerous mission: break into the Tower and free the stars from the padishah's grip.
If they fail, they risk losing everything they hold dear.