The simulation in question was numbered 1000... and it should have been a relatively smooth simulation.
In that simulation, Morgan, who had already experienced numerous simulations, was thoroughly familiar with all the early developments and avoided many factors that had caused their failures in previous runs. She prevented several assassination attempts against Guinevere, kept Guinevere's true identity secret, and even discovered and eliminated several rebellious vassals in advance.
Even in the subsequent War of the Kings against Artoria, although Artoria, who also had simulation qualifications, exerted herself fully to leverage all her resources, she still lost by a narrow margin, defeated by Guinevere's army. This gave Guinevere an advantage in later confrontations, and the momentum snowballed. Their Orkney Kingdom grew stronger, swiftly conquering surrounding territories and initiating campaigns to dominate all of Britain. At the same time, Guinevere took on the surname Le Fay, establishing the Le Fay family.
During the years of warfare, Artoria and her Knights of the Round Table were thoroughly defeated by Guinevere, and Artoria herself was captured. Likewise, their old rival, the White Dragon Vortigern, famed alongside Guinevere and Artoria as one of Britain's three dragons, was severely wounded by Guinevere and ultimately disappeared after falling off a cliff in the final battle. After this, most of England and Scotland were under Le Fay control, and the unification of Ireland became only a matter of time.
However, just as all of Britain was about to be unified under Guinevere, and Morgan was on the verge of becoming her long-desired Queen of Britain, a catastrophe occurred.
During a certain battle, Gawain, who had been raised by Guinevere as his heir, was struck by a stray arrow poisoned with a fatal toxin and died despite treatment.
After that, everything fell into chaos.
Since Guinevere had spent years in military campaigns, only his eldest son Gawain had reached an age suitable for battle, learning alongside his father, while the other children were educated by Morgan in the Orkney backlands... Although they acquired considerable magical skills and became capable magicians, under Morgan's guidance, they entirely lacked the qualities necessary to be rulers.
Unlike the virtuous and widely beloved Guinevere and Gawain, Morgan's children were peculiar in character: Agravain was cruel and cold, Gaheris arrogant and frivolous, Gareth timid and fearful. None had the aptitude or disposition to be kings, and the lords who had followed and been loyal to Guinevere naturally would not submit to them either.
By the time Guinevere attempted to educate his second son, Agravain, it was already too late.
The lack of a competent heir is a disaster for any dynasty.
Although under Guinevere's authority the vassals outwardly maintained loyalty, secretly, they harbored ambitions. Some started backing different princes, plotting to manipulate or control their favored prince, while others entertained inappropriate notions, even considering shifting allegiance to King Arthur under Merlin's influence. Even Agravain and Gaheris began competing with each other. The yet-to-be-established British Empire was already rife with factions and hidden currents.
Up to this point, the situation seemed not yet irreversible. As long as Guinevere lived, his invincible reputation could suppress all insubordination, allowing him time to train Agravain as a worthy heir.
But at this moment, Guinevere fell gravely ill from overwhelming grief over Gawain's death.
Years of warfare had left Guinevere with numerous internal injuries. His confrontations with Artoria and Vortigern had inflicted wounds that were difficult to heal, and combined with the fatigue from constant campaigns and administration, his body was thoroughly weakened. The death of his eldest son delivered a crushing blow, triggering the full eruption of his old injuries. He became critically ill, nearly beyond recovery.
News of his condition sparked the conflicts that had been suppressed by his presence. The ambitions of the lords swelled, and the rivalry between Gaheris and Agravain intensified. The kingdom Guinevere had built began to crumble.
Morgan, despite her mastery of magic, found herself completely powerless to control the chaos.
Britain remained a mysterious land, with multiple lake fairies and other magical beings supporting their chosen sides, compounded by the secret activities of hostile magicians like Merlin and other simulator players obstructing her. Only now did Morgan realize that without Guinevere, even if Britain fell entirely into her hands, she could not govern or stabilize the nation.
In this situation, the foolish and obsessive Morgan in the pan-human timeline became increasingly violent and frenzied.
She began systematically poisoning, assassinating, and cursing her political enemies, extracting wealth from her people, mistreating her children, and even attempting to control them with magic. This led to complete estrangement from Agravain and Gaheris, who left the capital to develop their own territories.
With both sons gone, Morgan became increasingly radical, believing the chaos existed solely because Guinevere had no competent heir.
She then attempted to extract Artoria's bloodline from prison, combining it with her own and Guinevere's to produce the artificial child Mordred, while Artoria bore Alsace. Her plan was for Alsace, inheriting the blood of two absolute rulers, to inherit the kingdom, and for the rapidly matured Mordred to use the powers inherited from Artoria to remove obstacles for her.
Of course, she sought to be the true ruler of the kingdom herself... because she must become the Queen of Britain she had long desired.
Unsurprisingly, this plan failed. Mordred betrayed her, and under Merlin's influence, she broke into prison to rescue Artoria, who reclaimed her child Alsace and vanished.
Meanwhile, domestic turmoil worsened, and Morgan missed any chance to reconcile with Agravain and Gaheris, who were consolidating power in their own territories.
At this point, Guinevere suddenly awoke.
Perhaps by a last surge of life, he recovered miraculously and needed no longer to remain bedridden. Upon learning of the events during his coma, he immediately launched a ruthless purge.
All opposition forces and treacherous lords were crushed or slaughtered. He implemented centralization, seizing lands, power, and inheritance rights from the lords. People feared him, calling him a tyrant and a butcher, yet his brutality compelled them to unite against him.
Ultimately, the rebels were defeated with only a third of his forces. Guinevere executed all opposition, and ancient noble families vanished from history, their assets confiscated.
In less than half a year, the chaotic situation that had confounded Morgan was cleaned up. One day, Guinevere summoned Agravain and Gaheris to the court. After a full day of discussion, Gaheris voluntarily relinquished his lands and inheritance to assist his brother Agravain.
After this, Guinevere passed away, bequeathing all he had built to Agravain.
Thus, the reborn kingdom was handed to Agravain.
Morgan, though mourning Guinevere's death, was simultaneously pleased that Agravain had legitimately inherited the kingdom. Once he conquered the remaining small kingdoms in Ireland, he would have unified Britain as king. Morgan now only needed to figure out how to seize the throne from her son to become Queen of Britain.
At this point, Morgan was mad enough to try to fight her own son for the throne.
However, knowing his mother well, Agravain did not seek to conquer the remaining kingdoms. His first act was to imprison Morgan and consolidate power.
But this was short-lived. In the simulation, Agravain was not as capable as in the pan-human history, having been educated solely by Morgan and lacking governance experience. Britain quickly deteriorated under his rule, with natural disasters and rebellions plunging the country into chaos.
For years, Agravain struggled to suppress uprisings and extract resources to maintain order. The old court ministers united, promoting Gaheris to lead a rebellion. Disappointed by his brother's rule, Gaheris opposed Agravain, and their struggle continued for years. As Britain approached the brink of collapse, Agravain managed to assassinate Gaheris, eliminating his opposition, but was soon overthrown by his sixteen-year-old son during a palace coup.
Only then did Morgan, imprisoned for so long, see the light of day.
Seeing her ambitious young grandson and realizing her dream of becoming Queen of Britain was slipping away, Morgan made a desperate decision.
She invoked an ancient forbidden spell, sacrificing her life, and using the blood of the Le Fay family—her and Guinevere's lineage—to summon Guinevere into her grandson, completing a body takeover and resurrection.
She was certain that alone she could never become queen; only Guinevere, who loved her, could fulfill her dream.
"Please, even if it's my last wish..."
"Let me become the Queen of Britain... I want to be the eternal queen of this island, for all generations."
As she approached death from the spell, she clutched the revived Guinevere's hand, pleading.
"...I understand."
As she believed, Guinevere never refused her:
"I will make you the Queen of the British Empire."
At that moment, Guinevere did not yet realize the malevolence of Morgan's spell.
—Not only did it take over her grandson's body, but as long as the Le Fay bloodline existed, Guinevere would eternally revive in any descendant's body after death.