Rugis F. Camellia, hereditary Duke of the Camellia duchy, historically a tributary state to the Hortensia Kingdom, ignited a violent rebellion against the monarchy on the fifth day of the twelfth month in the year 767 of the King's Calendar. During a formal royal audience, he invoked a dark pact to undergo monstrous transformation into a werewolf, assassinating the king despite intervention attempts by Leon D. Olivier, who sustained critical injuries. Commanding both his forces and monstrous demons, Rugis extended the rebellion beyond the capital, plunging the region into conflict and chaos. His strategic objective centered on overthrowing the royal lineage to seize control of Hortensia. After the coup and the presumed death or disappearance of Princess Mariel D'Hortensia, he orchestrated Prince Charlot's installation as puppet king, enabling the Camellia duchy to wield effective authority. Rugis commands formidable subordinates—master archer Roy Bachelot and dark magic-wielding twins Saria and Elva—who execute explicit missions like relic retrieval or attacks on strategic targets such as the church. His rebellion forged an alliance between previously antagonistic Camellia and Dayereh, uniting them against Hortensia. His werewolf transformation and demonic command, derived from the dark pact, granted significant combat prowess and fundamentally altered the region's military and political landscape. The rebellion's aftermath triggered prolonged warfare, destabilizing the kingdom and unleashing widespread monster incursions across formerly protected territories. Indirect evidence suggests Rugis's coup involved complex political maneuvering beyond military force. The papal authority under Alexis Vall d'Hebron, serving as guardian to puppet king Charlot, implies potential collusion or exploitation of church influence to consolidate control post-assassination.