Magic of the Lost Tome 3
The Sovereign

Luca is finally the queen of Balladaire. But her empire is already splintering in her hands. Her uncle wasn't the only traitor in court, and the Withering plague will decimate her people if she can't unearth Balladaire's magic. The only person who can help her wants the only thing Luca won't give - the end of the monarchy. Touraine is lucas general. She has everything she ever wanted. While Luca looks within Balladaire's borders, Touraine looks outward - the alliance with Qazál is brittle, and Balladaire's neighbours are ready to pounce at the first sign of weakness.
When the army comes, led by none other than Touraine's old lover, Touraine must face the truth about herself - and the empire she once called home. A storm is coming. Touraine and Luca will stand against it together, or it will tear them apart once and for all.

The Sovereign brings princess Luca and soldier Touraine together one last time in the thrilling conclusion to C. L. Clark's beloved queer political fantasy trilogy.