A month later, King Lanposa III, along with the royal members and the six great nobles gathered for a meeting as they just received an declaration from the Empire that they are forming an alliance with Sorcerer King Ainz Ooal Gown's country and declaring war for Re-Estize Kingdom's unrightful rule over the territory near Carne Village, that should be return to it's rightful ruler. Due this news, everyone was in a heated debate over this mad declaration. Eventually, they simply dismiss it as another excuse for the empire's annual war, laughing at Ainz as just some foolish joke. However, feeling uneasy, Gazef Stronoff warned the nobles not to underestimate Ainz. In the end, the Kingdom still decided to accept the declaration of war, despite Gazef's warnings.
As two months passed in winter, two hundred and fifty thousand soldiers were gathered at E-Rantel. The royals and top nobles gathered are discussing about their war preparation plans against the empire's forces. Everyone was shocked at the report that the empire gathered sixty thousand soldiers which is three times more than the typical amount of the past wars, and they also received an announcement from Slane Theocracy declaring their neutrality against Ainz. These news caused the nobles to suspect the countries as they were all making such an overreaction, over a single magic caster. Due to the ignorant of the nobles of the power of magic, they have always believed that magic casters were just performers who used tricks such as fire balls and flight in a battlefield. They believed that a single magic spell that could invoke complete destruction is just a myth. Despite Gazef's constant warning and persuasion not to underestimate Ainz, they still decided to send five thousand men to fight Ainz to make an estimation of his power in the war. Even after that, Gazef still thinks that they are underestimating Ainz. Afterwards, the King ordered Prince Barbro to travel to Carne Village with an army of five thousand to collect information on Ainz while Marquis Raeven was given total command over the army in Katze Plains.
After the meeting, Gazef was still in deep thoughts about Ainz, his instincts warning him that it is a grave mistake to fight Ainz in the first place. He then meets up with Brain and Climb, he then asks them to have a chat with him somewhere in private. After chatting and enjoying the view of the plains over a period of time, as if it was going to be their last time, Gazef warns Brain that he will never be able to win against Ainz. Then, Brain also talks about finding out more of the mysterious Adventurer Momon, and Momon's fight against a strong vampire that appeared, that could be relate to Shalltear Bloodfallen, and wanted to investigate further.
At the military fortress in front of the empire, Nimble Arc Dill Anoch meets up with the army commander. They talk about this war being a bloody battle to capture E-Rantel as a gift to honour the alliance between the Empire and Ainz Ooal Gown, while building a friendly relationship. The empire also request for Ainz to cast one of his strongest magic, to determine his power. They then welcome the Sorcerer King's arrival with great hospitality, afterwards Ainz's army was teleported there, and their arrival made everyone realize, with just their appearance alone, that the small army of five hundred is not to be underestimated.
While marching towards Carne Village, the first prince is angry at the king for not allowing him to join the war at Katze Plains. Thinking of his siblings and fearing that he was cast away with the throne being decided by the king already, he then decides to make a outstanding achievement. Thus, he then decides instead to change the objective given to him and instead to capture Carne Village, which he deemed is the root that caused the Empire and Ainz to start the war with the kingdom. He concluded that he would make the villagers there join his army, and return to the war at Katze Plains.
Later, Enri Emmot was alerted and realized that the kingdom's army is marching towards their village. The prince's army's messenger answers to Enri's questions. They stated that the kingdom is now at war with Ainz and demanded the villagers to open the fort gates for further investigation. The villagers immediately accepts that if it is about their savior, then the kingdom must be the ones at fault. Due to their gratitude, loyalty to Ainz and also not wanting to expose the goblins and ogres in the village, Enri still persist on not opening the gates. The prince then became impatient and was angered by Enri's persistence. He then gave the order to launch fire arrows at the village as a warning. The villagers still not wanting to betray Ainz. Driven to repay Ainz's help while at the same time angered by the fire arrows, did not hesitate to fight against the army, resolving to die.
While the goblins, ogres and male villagers staying as fighters, they planned to lure the enemy army into the village to attack the enemies groups flooding in first and then distract the ones outside afterwards by thinning their numbers through causing the enemy army to spread around surrounding the outside of the fort . During the fight, Enri would escape behind the fort to the forest with the rest of the villagers. But all this failed when Enri's group escaping to the forest was chased by the enemy soldiers riding on horses. Out of desperation, at the same time desiring to protect the helpless villagers and Nfirea who was preparing to stall the soldiers, Enri blows her second Horn of the Goblin General.
While the dying goblins and villagers made their final effort to fight back, they stopped upon seeing the sudden appearance of the massive unidentified army of goblins, this cause them to retreat back into the ally goblin's army. While the prideful prince felt angry at himself being forced to fight some lowly goblins, while being at a disadvantage, ordered his army to continue fighting instead of retreating. But the goblin army consisting of many groups of different classes and high level goblins overwhelms the prince's army with easy, forcing the prince to retreat. After managing to escape to safety at the plains, Lupusregina Beta suddenly appears behind them, claiming to have observed the situation before and has also been send here to kill everyone under Ainz's orders. She then summons thirty level 43 red hat goblins, killing everyone in despair and fear with only the prince dying after half an hour of torture by Lupusregina.
At the Katze Plains, the Kingdom's huge dominating army is stationed on one side and Empire's confident army on the other. Many of the nobles still predict that their losses would be minimal even after Ainz entered the war, but this time the empire's army did not make the first move. As time passes, anxiety and tension rises among the kingdom's ranks as both armies on each side remains in stalemate. Thinking that the empire's army was waiting for something, Raeven then started a discussion with Gazef, whom was fully equipped with kingdom's treasured equipment. But even so, Gazef still thinks that he can't win against Ainz, and feels anxious about the current situation. At that moment, the empire's army started to separate into two flanks, effectively opening a path for a small unusual army bearing an unknown banner, consisting of two hundred Death Knight, with the rest of the other three hundred armed troops having an unusual appearance, making the army five hundred in total. In shock and terror, Raeven's adventurer bodyguards fearfully warned him that the five hundred mounts that the unknown army are riding on are indeed the Legendary Soul Eaters that killed more than hundred thousands of people in the past with just three. Hearing this and realizing how truly terrifying the small army was, Raeven, in panic, immediately ordered the army to retreat. However, it was all in vain as Ainz , at the front of the army with Mare and Anoch standing at his sides, started casting a single spell that shone brightly white.
As Ainz cast his over rank magic La Shub-Niggurath, a dark vortex flows towards the direction of the kingdom's army. It instantly took the lives of seventy thousand soldiers from the kingdom army's left flanks in the blink of an eye. As confusion arises amongst the rank of the kingdom's army, all whom bore witness within the empire's army understood and realized the horror of the reality of what just took place. Everyone present started trembling in fear even though they knew that Ainz was their ally. Even terrifying was Ainz's calmness of the situation, and each to their own were asking God of how was it possible that a magic caster of such degree of power even exist in this world. Ainz then casually told the pale Anoch that his magic has not ended just yet.
As though they were trapped in a terrible nightmare, the empire's army witness yet another horrible scene that took place before them. A titanic black blob descended from the void in the sky. The moment it landed, it covered the corpses of the dead soldiers in darkness rapidly. Fear, despair, horror, terror, and death; all hell and chaos broke out as five Dark Young, with their levels higher than 90, started to grow and shaping into being from the darkness like trees and tendrils. At this sight, Ainz laughs happily at this situation as he just broke the game world record of being able to summon so many of such monsters. Mare and a traumatized Anoch congratulated Ainz, while everyone else were shaking head to toe uncontrollably at Ainz's excited tone. This was due to Ainz thinking that the empire's army had just a small touch a small scale of his true power. Ainz then orders the newly formed Dark Young to attack, while warning them to spare four specific people. The massacre began as the Dark Young started rushing towards the army, like doom itself. The monsters bulldoze through the retreating army's flank. Screams, cries, shout, pleas and yells could be heard. Death was everywhere, the nobles were no less. One of the Dark Young then started chasing the fleeing Raeven and the adventurers. It killed all Raeven's adventurer guards in just two seconds with apparent ease. As it was a heartbeat away from ending him, it suddenly stopped just in front of the breathless Raeven and stood as still as a statue.
The horrified imperial soldiers, upon witnessing this massacre from a safe distance, even started praying for the safety of the kingdom's army. Ainz then takes off his mask and called upon the empire army to cheer for his power. While they were desperately cheering loudly for him in fear, one of the Dark Young that Ainz summoned was returning to him and headed the imperial army's direction. The though of Ainz displeased with them combined with their extremely unstable state of mind, the sight of the incoming Dark Young caused every single one of the panicking imperial soldiers to lose all sense of self and ran for their lives, trampling over and killing their own allies as they were in the state of a stampede. Abandoning the horses, Gazef's warriors carry their king in a retreat back to E-Rantel. Gazef himself was trying to stop the Dark Young but was strangely ignored by it. Yet another Dark Young makes it's appearance, but this time, with Ainz sitting on top of it came to greet Gazef with Climb and Brain arriving there too. Ainz then ask Gazef to join him in exchange for stopping this war. However, Gazef declined, thinking that it is ungrateful to do so as he was loyal to his king. Instead he challenged Ainz to a duel with him. Ainz accepted his challenge, and asked the other two people to be the witness, and thus the battle started at Climb's signal. Immediately after Climb's signal, Ainz stopped the time around them using Delay Magic and kills Gazef instantly using True Death, without him being able to even react nor feel pain. It looked as if Gazef was a puppet with his strings cut off as he fell down and no one else knew what happened. After telling Climb and Brain that he will stop the attack but demands them to give away the territory around E-Rantel in a few days or he will release the dark young in their capital, Ainz then return back to the Empire fortress with all his monsters. Afterwards, Brain then declared to Climb back in E-Rantel that he is going to continue Gazef's legacy.
Later in spring, rumours were being spread about a horrifying new ruler in E-Rantel. As (Pandora's Actor) Ainz, Albedo and his army of death knights and cursed warriors enters E-Rantel, Albedo decided to kill a young boy who is disturbing the arrival's march but was stopped in the last minute by Momon. Ainz stopped both of them before a battle broke out and then Momon was threatened and asked to serve Ainz as the city's enforcer. After Ainz's army left, Momon then asked the residents not to start a rebellion and be careful of instigators for his sake. E-Rantel continued to be ruled in peace throughout history.
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