In the quiet halls of Chaldea, Ritsuka and the Servants were going about their daily routines, preparing for another day of maintaining humanity's safety across different eras. However, their peace was shattered when a strange disturbance rippled through the air, followed by the sudden appearance of children from a distant future.

Ritsuka blinked in disbelief as four children materialized before them, each bearing an uncanny resemblance to figures from Arthurian legend.

"What in the world?" Ritsuka muttered, his eyes widening in astonishment.

The first pair of children, twins dressed in attire reminiscent of Morgan le Fay, with dark hair adorned with black highlights, stood before them with mischievous grins. The second set of twins, dressed in outfits similar to Caster Artoria but customized with Chaldea uniform elements, gazed around with curious eyes. And finally, the lone prankster, with features akin to Proto-Merlin yet sharing some resemblance to Ritsuka, stood off to the side with a playful smirk.

"Um... hello?" Ritsuka ventured cautiously, unsure of how to react to the sudden appearance of these children.

The twin dressed like Morgan le Fay stepped forward, her eyes gleaming with mischief. "Greetings, inhabitants of this quaint establishment! Fear not, for we bring with us the promise of excitement and adventure!"

The other children nodded eagerly, their expressions a mix of innocence and mischief.

Mash, ever the voice of reason, stepped forward, her shield at the ready but her demeanor gentle. "Excuse me, but who are you? And how did you come to be here?"

The twin dressed like Caster Artoria tilted her head, considering the question. "We are travelers from a distant future, drawn here by the call of destiny and the lure of mischief."

Ritsuka exchanged a glance with the Servants, silently communicating their shared confusion and concern.

Meanwhile, the prankster child giggled, twirling a strand of hair around her finger. "Oh, don't mind us! We're just here to have a bit of fun, that's all."

Before anyone could respond, chaos erupted as the children dashed off in different directions, laughing and shouting gleefully.

"We have to do something!" Ritsuka exclaimed, his heart racing with a mixture of worry and excitement.

The Servants nodded in agreement, springing into action to corral the mischievous children before they could cause any more trouble.

As they chased after the children through the halls of Chaldea, Ritsuka couldn't help but wonder about their origins. Who were these children, and what connection did they have to the legendary figures they resembled?


Mordred scowled as she led the charge to track down the mischievous twins who bore an unsettling resemblance to Morgan le Fay. The irony of the situation was not lost on her - the idea of potentially chasing down her own relatives, or at the very least, individuals who resembled her mother.

"Are we really doing this?" Mordred muttered under her breath, her irritation palpable.

Gawain, ever the stalwart knight, offered a reassuring nod. "We have a duty to uphold order within Chaldea, Mordred. No matter who these children may be, we cannot allow them to wreak havoc unchecked."

Gareth, her steadfast sister, chimed in with a determined expression. "We'll find them, Mordred. And if they are indeed related to Morgan le Fay, we'll deal with that when the time comes. For now, let's focus on bringing them back safely."

Tristan, with his keen senses, scanned the surroundings for any sign of the elusive twins. "I sense their presence nearby. They can't have gone far."

Bedivere, ever the voice of reason, added, "Let's proceed with caution. We don't know what these children are capable of, or what their intentions might be."

And Lancelot, burdened by his own past, remained silent but vigilant, his gaze darting from shadow to shadow as they pressed forward.

As they ventured deeper into the labyrinthine corridors of Chaldea, the air crackled with anticipation, each knight on edge as they searched for the elusive twins.

Suddenly, a burst of laughter echoed through the halls, drawing their attention to a nearby chamber.

"They're in there," Mordred declared, her hand tightening around her sword hilt.

With a shared nod, the knights readied themselves for whatever awaited them within.

As they entered the chamber, they were met with a scene of chaos. The twins, with their dark hair and mischievous grins, were engaged in a spirited game of hide-and-seek, darting between crates and pillars with ease.

"Stop right there!" Mordred called out, her voice ringing with authority.

The twins froze, exchanging a mischievous glance before breaking into fits of giggles.

"Looks like we've been caught, sis," one of them said with a smirk.

Mordred's jaw clenched as she approached them, her expression stern. "Who are you, and what are you doing here?"

The twins exchanged a glance before the one who had spoken stepped forward, her gaze meeting Mordred's with unflinching confidence. "We are the daughters of Morgan le Fay, travelers from a distant future. And we're here to shake things up a bit."

Mordred's eyes widened in disbelief, her mind reeling at the revelation.

Before she could respond, Gawain stepped forward, his voice steady but firm. "Regardless of your lineage, you cannot simply run amok within Chaldea. You will come with us, and we will sort this out properly."

The twins exchanged a resigned glance before nodding in agreement, knowing that their game of mischief had come to an end - at least for now.

As the knights escorted them back to the main hall, Mordred couldn't help but wonder about the implications of their discovery. What would their connection to Morgan le Fay mean for the future of Chaldea, and for her own role within it?


"You can't catch us, losers!" As the twins made a break for it, the knights lunged forward, determined to apprehend them. However, their path was impeded as the twins cast spells with practiced ease, turning the floor beneath them into slippery ice. With a chorus of shouts and curses, the knights found themselves sprawled on the ground, struggling to regain their footing amidst the weight of their armor.

Laughter echoed through the chamber as the twins taunted them, their words cutting like daggers. Mordred's anger flared at their mockery, her hand tightening around her sword hilt as she rose to her feet, fury burning in her eyes.

"You little brats!" she seethed, her voice laced with venom. "I'll make you regret ever setting foot in Chaldea!"

But before she could unleash her Noble Phantasm, the other knights rushed to restrain her, their voices filled with urgency.

"Mordred, calm down!"

"Don't let them get to you!"

But the twins only laughed harder, their taunts growing more vicious by the second.

"Look at her, getting all worked up over nothing!"

"Who would want to follow a leader like her? She's nothing but a loner with no friends!"

"And she's so flat!"

Mordred's grip on her sword tightened, her fury reaching its boiling point. With a roar of rage, she unleashed her Noble Phantasm, the energy crackling around her in a blinding display of power.

But the twins were not so easily defeated. With a wave of their hands, they cast a reverse spell, forcing everyone within range to switch positions with them in a sudden and chaotic upheaval.

And then, it happened.

Chaldea rocked violently as a deafening explosion reverberated through the air, shaking the very foundations of the facility. Dust and debris filled the chamber as screams of alarm filled the air.

In the chaos that followed, Mordred and the other knights found themselves thrown to the ground, their bodies aching from the impact. As they struggled to regain their bearings amidst the wreckage, a sense of dread settled over them like a suffocating blanket.

What had they unleashed with their reckless pursuit of the mysterious twins? And what consequences would they face as a result of their actions?