Wicked Wings: Subaru's End, Book 2 (Unabridged‪)‬

Imprisoned in Hikari, Cahya’s last-ditch effort to reason with Leor, the king of light, fails, but her efforts aren’t in vain.

Hidden in plain sight in the rotunda of Halcyon Palace is a secret—a magical secret—and Cahya must unlock the mystery so that she can return to Kage and the dark realm of Kurai, and together with Tariq and their allies, mend what has broken the celestial realm of Subaru.