The Crown of Rutile Quartz: Volume 2

After his victory against the Great Empire of Galed, Slaine is crowned the King of Hasenvalia. The young monarch spends the early days of his rule in comfort, preparing to marry his aide-turned-lover, Monica—but a shocking betrayal and an empire-backed coup attempt threaten to drag his tiny kingdom back into strife and unrest. If Slaine wishes to hold on to his crown and protect his people, he must devise a cunning plan to dismantle the empire’s impregnable Sauerland Fortress from within—and thwart the nefarious Imperial Prince Florenz once and for all. The second installment in the Crown of Rutile Quartz series, a fantasy saga chronicling the cutthroat politics and harrowing battles a clever young king must face in his rise to power. Follow Slaine as he uses his wit and knack for strategy to beat impossible odds.

[From J-Novel Club]