Overlord Codexery

Battle of Katze Plains

One undead lord reshapes the balance of power forever.

The Battle of Katze Plains stands as a pivotal military engagement in the history of the New World, occurring in Volume 3. It was here that Ainz Ooal Gown chose to reveal his true strength to the human nations, transforming from a mysterious entity into a sovereign ruler. The conflict took place on the open grasslands bordering the Re-Estize Kingdom and the Baharuth Empire, serving as the stage for a demonstration of power that would alter global politics forever. This event is widely regarded by historians within the setting as the moment humanity realized they were no longer the apex predators of their world. The overwhelming victory secured by Nazarick's forces forced the major human powers to acknowledge the existence of an undead empire, shifting the balance from a struggle between kingdoms to a survival game and paving the way for the eventual formal establishment of the Sorcerer Kingdom in Volume 10.

significance
Paved the way for the Establishment of the Sorcerer Kingdom in Volume 10

Lore & Background

Following reports of a powerful undead creature that had destroyed Carne Village, the Baharuth Empire invaded the Re-Estize Kingdom under that pretext. They gathered their finest warriors and mages on the Katze Plains, expecting to face a dangerous monster or a rogue adventurer group. Instead, they encountered Ainz Ooal Gown alone, without his Floor Guardians, who treated the human army not as enemies, but as insects beneath notice. The battle highlighted the catastrophic power gap between the New World and YGGDRASIL players. While humans relied on individual skill and low-tier magic, Nazarick deployed area-of-effect spells capable of wiping out battalions in seconds. The psychological impact was immediate; soldiers who had fought bravely against dragons found themselves powerless before a skeletal figure wielding god-like authority. In the aftermath, the political landscape fractured. The Kingdom lost its greatest warrior, Gazef Stronoff, who would later die in Volume 9 at the hands of Ainz, leaving the Kingdom vulnerable to internal strife and external threats, while the Empire saw an opportunity for survival through submission rather than resistance. This engagement cemented Ainz's reputation as the Sorcerer King and demonstrated his dominance, creating the necessary conditions that would lead to the official proclamation of the Sorcerer Kingdom in Volume 10 following the conquest of E-Rantel in Volume 9.

In Their Own Story

The wind carried the scent of ozone and fear across the Katze Plains. Below, thousands of soldiers stood frozen, their spears trembling not from cold, but from the sheer pressure radiating above. Ainz hovered silently, his skeletal fingers gripping a staff that pulsed with dark energy. He did not shout orders; he did not need to. The silence was louder than any war cry. When the first spell descended like a falling star, it turned the battlefield into a canvas of ash and light, proving that in this new age, humanity's era of dominance had ended.

Reader's Guide

The conflict began when the Re-Estize Kingdom and Baharuth Empire assembled their armies to investigate rumors of a powerful entity consuming Carne Village. They expected a monster, but found Ainz Ooal Gown leading his Floor Guardians. The initial clash demonstrated an insurmountable power gap between YGGDRASIL players and New World adventurers. Ainz ordered his guardians to engage the enemy forces without mercy. While Demiurge managed the battlefield strategy from the shadows, Cocytus sought a worthy opponent among the human commanders. This led to a duel that would define the battle's tragic legacy for humanity. Soldiers watched in horror as high-tier spells erased battalions instantly. The sheer scale of destruction terrified the onlookers from both nations. The engagement concluded with the total annihilation of the opposing armies. King Ramposa III lost his strongest protector, and Emperor Jircniv was forced into submission. Ainz declared himself Sorcerer King, establishing Nazarick as a sovereign nation on the world stage.

Did You Know?

Frequently Asked Questions

What was the Battle of Katze Plains?

It was a massive war between human kingdoms that ended when Ainz Ooal Gown intervened to protect his interests. This confrontation served as his public debut as a sovereign ruler capable of ending wars instantly.

Who participated in this conflict?

The Re-Estize Kingdom and Baharuth Empire sent their armies, but the real power belonged to Nazarick’s undead legions. Ainz Ooal Gown commanded these forces while his guardians supported him from the sidelines.

Why is this battle considered a turning point?

This conflict directly enabled the creation of the Sorcerer Kingdom through a display of absolute magical dominance. Humanity understood they faced an enemy far beyond their comprehension after witnessing the destruction.

How did the human armies fare against Nazarick?

Both sides suffered catastrophic losses due to high-level spells like Mass Death and Fall of Man. Survivors fled or surrendered, realizing resistance was futile against such overwhelming force.

Where exactly did this event occur?

The fighting took place on the open grasslands bordering the Re-Estize Kingdom and the Baharuth Empire. This location became infamous as the site where global politics shifted toward fear of the undead.

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