Duel at Ro-Lente Castle

Duel at Ro Lente Castle was a duel between Sorcerer King Ainz Ooal Gown and Princess Renner's bodyguard, Climb, during the war between the Sorcerer Kingdom and the Re-Estize Kingdom. In reality, though, it was all a set up.

Background
After successfully killing her father, Ramposa III right in front of the Sorcerer King and his high ranked subordinates and thus proving her loyalty and sincerity in her desire to join the Sorcerer Kingdom in earnest. Third Princess, Renner, requested to her new monarch to play along with her "play" in order to keep up the facade of her "Golden Princess" Persona to her "puppy" by making it seem as if she was forced to kill her father against her own will and abduct Climb as a hostage to give the Sorcerer King leverage over her to make him trust her.

The entire event itself was meticulously planned out by Renner with the assistance of Demiurge, who agreed to use his [Command Mantra] on Climb to plant the idea in his head that she was mind controlled into the act. Climb's death in the duel was also planned due the Sorcerer Kingdom easily possessing individuals capable of casting Resurrection Magic to revive him within Nazarick in order to further fulfill Renner's desire to care for the weakened Climb herself.