Fall of Ro-Lente Castle

Fall of Ro Lente Castle was the besieging on the Royal Palace of the Re-Estize Kingdom by the Sorcerer Kingdom's forces amidst the war between the two nations. It also saw the assassination of King Ramposa III as well as the defection of Princess Renner to the Sorcerer Kingdom.

Background
It was later revealed that the entire downfall of the Ro Lente Castle was in fact nothing more than a pre-prepared, carefully planned staged play prepared by Third Princess, Renner Theiere Chardelon Ryle Vaiself. This was her final attempt to show her loyalty and devotion to the Sorcerer Kingdom and the Sorcerer King by personally assassinating and killing her own father, King Ramposa III in front of him and his subordinates. It was Renner's way to prove the sincerity of her desire to join their kingdom by essentially being the one to end the Re-Estize Kingdom.

Battle
The exact events of the battle are unknown. However, by the time Climb returned from his mission the castle had fallen, with all its inhabitants having been killed; except Princess Renner.

Aftermath
The ending of this operation effectively spelled the end of the Re-Estize Kingdom and complete takeover of its territories by the Sorcerer Kingdom and the final decisive battle of the conflict that effectively ended the war as the Sorcerer Kingdom's overwhelming victory.

This incident was also served as the final screening test for Princes Renner's admission into the hierarchy of the Sorcerer Kingdom, where the Sorcerer King's three closest aides;Albedo,Demiurge and Cocytus and the Sorcerer King himself personally take open analysis on Renner and her overall capabilities as a potential asset or potential threat against their Kingdom should she join. With the Albedo and Demiurge having successfully obtained a full grasp on the Former Princess's personality, intelligence, motivations and overall abilities to successfully convince them that they could handle her without much difficulty.

This operation also served to act as the building stage for the Third Princess's personal plot to manipulate her faithful and loving Dog,Climb, to not only remain loyal to her, but also have him become loyal to the Sorcerer King upon her revealing her defection to the Sorcerer Kingdom and transformation into an Imp.

During the interval between Climb's "mission" to hide the Royal Treasures and his return to the Royal Palace, Renner had already set up the entire stage for his "Duel" against the Sorcerer King by successfully setting it up as if she was compelled by Demiurge's Command Mantra to unwillingly kill her own father.