Noble Phantasm.

They are powerful armaments made using human imagination, as their core and are the weapons and/or abilities owned by Heroic Spirits.

As humanity's illusions, they embody the ultimate mysteries of a hero as symbols of their existence through historical facts and anecdotes they can be physical weaponry (e.g. swords, spears, bows) or support items (e.g. shields, rings, crowns). They can also be abstractions such as unique, often magical abilities (even close to or matching True Magic), unique (even conceptual) means of attack, curses, and changes to the very environment and its physical properties.

Even a servant can equip multiple noble phantasms as once when summoned as Servants in the Holy Grail War they are the trump cards of the heroes that allow them to overcome others in battle.

However, a noble phantasm isn't meant to be used as a show for other people

Not up until now.

When a certain red-haired servant's noble phantasm attracted many people that knew him.

Emiya Shirou took a deep breath as he was in Chaldea's testing room. Today was the day that Chaldea was finally able to record his noble phantasms and see what it is for future reference.

However, there was one thing he did not expect...  That is the amount of attention he was going to receive when he was going to unleash his noble phantasms.

Which was in the form of the Arturias, Rins, Sakuras, Illyas, Miyu, Astraea, Jaguar-man, Irisviel, Kiritsugu, EMIYAs, Ritsuka, Mashu, Fou, Da Vinci, Neros, Jeannes, Okitas, Musashi, the Knights of the Round, Merlin, Lancer Cu, Rider Medusa, Caster Medea, Berserker Heracles, Sasaki Kojiro, and surprisingly the Gilgameshes looking at Shirou.

And they all look anxious well, most of them are.

Shirou sighed at the situation in front of him since it's been a long time since he used his Noble Phantasm.

"Just how did something as simple as this, turn into something so big," the red hair man thought.

(A few hours ago)

"Wait, you want both of me  to go to the training room later?" Shirou asked.

"Yes is that a problem for you? " Da Vinci asked.

"Well not really," scratching the back of his head." But why thought?"

"Well, mister Chaldea needs to know about your Noble Phantasms" Da Vinci explained.

Shirou thought about what Da Vinci said and realized that ever since he arrived in Chaldea he hasn't shown his noble phantasms in front of anyone at all. But then again releasing that will take everything he got since the true factor of his Noble Phantasm, was to rewrite human order for a temporary time.

"That's right ever since I arrived here I haven't even shown what my noble phantasms are wondered why it took this long for me and Da Vinci to realize this but I gonna need to trick them into not knowing my true Noble Phantasm"

"Well, Da Vinci is right on that one. But the main problem would be releasing it since the last time I release my Noble Phantasm, I nearly froze the entire world into an artic Tundra," Shirou thought real hard in his mind.

"Shirou!" Da Vinci calls out snapping Shirou out of his thought.

"Yeah, I get it," Shirou said.

"I see, anyway can you do it?" Da Vinci asked.

"I can, but the sheer mana that I needed to release it would be beyond what master reserve is," Shirou said.

"Don't worry, we've got that cover! Thanks to the help of our engineering team," Da Vinci said.

Seeing that there is not much of a choice here, even though he dislikes the nature of his Noble Phantasm because it reminds him of the painful memory of the past. But either way, if he declines now then somewhere in the future Da Vinci would just ask him again, and he also needs to inform his master about the function of his Noble Phantasm.

"Seeing that I don't have much of choices here, fine," Shirou said.

"Excellent!" clapping both their hand in excitement. "Meet me in the testing room half an hour from now! Now then I'm gonna get going, so I can prepare the room. See you later!"

"See you too," Shirou said in an unenthused tone.

After leaving Shirou alone in the hallway, he decides to go back to his room and prepare the necessary things that are needed to activate his Noble Phantasm. But when he thought that their little talk was gonna keep hidden, they were wrong as somebody overheard them from afar.

"Did you hear that?" Illya whisper.

"Yeah, Onii-chan Noble Phantasm is still unknown, he and Da Vinci are planning to release it in a few hours," Kuro whisper back.

"Wonder, how his noble phantasms function?" scratching the back of her head in curiosity. "A sword that shoots a giant laser? Or is it summoning a bunch of swords? Or is it a technique that involves multiple strikes? Or is it something else that we have never seen before?"

"Who knows?  let's go check it out later," Miyu said in excitement

"Yeah!" Illya, Kuro, and Sitonai said they then soon left for the training room.

However, what they didn't know was that someone else overheard their little conversation again.

And, that person was Irisviel Von Einzbern.

"What's this that I'm hearing... My son is planning to release his Noble Phantasm which is still unknown! Well, this seems interesting better tell the others, especially the girls!" Irisviel thought excitingly.

Soon, Iriviel started talking to the girls about Shirou's noble phantasms testing which got the girls excited, and this started to spread throughout Chaldea.

(Back to the present)

"Da Vinci just is going on here?" Shirou asked.

"Well, it seems that word has spread about you carrying multiple Noble Phantasm," Da Vinci replied. 

He turned around to see the Arturias, Rins, Sakuras, Illyas, Miyu, Astraea, Jaguar-man, Irisviel, Kiritsugu, EMIYAs, Ritsuka, Mashu, Fou, Da Vinci, Neros, Jeannes, Okitas, Musashi, The Knights of the Round, Merlin, Lancer Cu, Rider Medusa, Caster Medea, Sasaki Kojiro, and the Gilgamesh was looking at him.

"And can you tell me why are you all here?" Shirou asked.

"Because we want to see how strong you have become Shirou's," answers Arturia and her counterparts.

"B-Because... We, want to see what kind of ridiculous stuff you'll pull off today!" answered Ishtar and her counterparts with a blush on their faces.

"Im just here, to keep her from causing trouble," Ereshkigal said.

"We, want to see senpai's Noble Phantasms" answers Parvati, Kama, BB, and her sisters.

"We also want to see onii-chan's noble phantasms!" answer Illya, Kuro, Sitonai, and Miyu with a hint of excitement.

"I want to see, what display of power Sherou Noble Phantasm has," Astraea said.

"I'm here to make sure you don't get yourself into trouble!" Jaguar-man warned him.

"I want to see, what kind of Noble Phantasms my son has!" Irisviel said excitedly.

"I'm only here because Iri dragged me here," Kiritsugu said.

EMIYA and EMIYA Alter didn't say anything.

"Well, I and Mash were informed by Da Vinci to see how your Noble Phantasm work," answered the master, Ritsuka.

Mash nodded her head in answer.

"Fou!" answer the fur ball.

"I want to see what abilities of your Noble Phantasms, praetors!" proudly answer Nero and her counterparts.

"Hmph... I'm here because I've not nothing better to do," Jeanne D'Arc Alter said.

"Now, now that isn't the case Isn't it?" Jeanne D'Arc said with a smile.

"I want to see what Shirou-san is capable of," answer Okita and Okita Alter.

"I want to see what noble phantasms Shirou-kun and his alter have!"

"We want to see what both our queen is capable of" answered the knights of the round table.

"I want to see, mother's true Noble Phantasm which I haven't seen before!" Mordred said.

"I am curious to see, what the Shirou Noble Phantasms are capable of," Merlin said with a sly smile.

"I'm interested in what the kid got on his sleeve," Lancer Cu said with a smirk on his face.

"I'm just here to help, miss Parvati if she needs my assistance," Medusa said.

"I need to take some inspiration," Medea said.

"Rarrrrgh!"Berserker Heracles shout

"I wonder what techniques saber's former master will show," Sasaki said.

Archer Gilgamesh didn't say anything but Caster Gilgamesh did.

"I'm here just to see why my Archer counterpart keeps calling you Faker, and to keep him on a leash," Caster Gilgamesh said

"Me too," cheerfully answer Kid Gilgamesh.

Shirou sighed after he heard everyone's reasons.

"Jeez... If this how things gonna turn out to be, I know I should make sure that nobody was near us," Shirou thought.

"Shirou! What are you waiting for? It's time you know! You don't want to keep these people waiting!"

"Huh... Oh yeah," Shirou utter.

Shirou then turns his head around and takes a deep breath. Raising his right arm in front of him, blue lines suddenly ignite from the palm of his hand.

Blood of fire... The bone of iron... Heart of glass...

The temperature of the room suddenly began to drop slowly, as every one of them could feel the sudden drop of the hot temperature.

I have overcome many odds... Not even once retreating, nor even once be Victorious...

Blue lines soon began to quickly spread through Shirou's entire body, covering from his head to his feet.

I have withstood much pain, to create thousands of weapons!

The blue lines that covered Shirou's body were now injecting themselves into the ground, with under a few seconds almost most of the room has been covering the lines. Though the audience didn't get any of the blue lines on their body, they still could feel a tinny shock from the flowing energy that is coming through the lines.

This world is my battlefield...

Cold and painful words yet it holds some truth left under his cold breath because right now the temperature of the room has fallen under a degree to -40 F°.

This world is my true self...

Slowly weapons began to appear out of thin air and gather in his surrounding. All the weapons soon stab themselves on the ground, blue flame began to spark underneath the tips of each weapon.

This world is my kingdom...

For a glimpse second the audience caught a small sight of a man wearing the same outfit as Shirou, standing on top of a hill with a massive sword while being surrounded by a graveyard of weapons.

As the man holds a single picture that holds a face of the man and a woman together, the face of the man revealed all the sadness and pain he had fought for being buried under endless pits of snow that fall from heaven.

Even after endless victories, and losses...

Another slight shock was felt through their veins they reveal another image of the red hair man, but this time he was standing under a pile of corpses and rusty weapons. On his hand, they could see that the man was holding three crying babies, the cold gaze that the man give soon change into a gaze filled with hope.

A sad yet pitiful smile was seen to be slowly forming on the man's face, as he soon began to roar out painful and sad words that cannot be heard by the audience. But it can be easily described by the audience after seeing the tears that he let out after his announcement.

I never regret my path! The path that is filled with snow of my promise...!

The room temperature soon drops to sub-zero but the audience cannot feel the sheer cold of the temperature anymore, but they still could feel the sadness and loneliness under the cold that the room has dropped. Under Shirou's feet, a big circle of blue flame finally formed itself, as all the weapons that is on the ground began to ignite itself on fire.

The promise, that I haven't fulfilled yet! Come forth my!

A spark of bright light soon encase the entire room for a moment everyone in the room was forced to cover their eyes to protect themselves from the brightness that happen, though Shirou, on the other hand, let out a sad smile as he began to remember all the memories of his past being washed down through his head right now.

Oath under the snow!!

After a few moments, the brightness was gone and everyone opened their eyes. And they were in shock, especially EMIYA, EMIYA Alter, Merlin, and Fou.

In front of everyone's eyes, there was nothing but a wasteland of bedrock and obsidian that is being covered by a thick pack of snow, there was no life to be found in this world as if the world have lost its meaning to living. The view of the pitiful world was swept under the cold temperature of the snow, that no normal living being can survive in this world for no longer than a week.

The view can be stretched out through an endless horizon of mountains and hills that were covered in snow, the sky above them was also in the same case as the land. The once beautiful and clear sky of the world has now changed into a thick and endless night, with only the stars being the only thing to bring light throughout the endless horizon of darkness.

An endless rain of snow that will forever fall from the sky the air around this world is also poisonous for normal people to live in, but besides the abstract and hopeless land of this world, it also holds some of its beauty. Which is an endless graveyard of weaponry that spread out throughout the horizon.

There were many weapons on this land some of them hold an affinity for the curse, demonic, holy, dragons, divine, and even those that can destroy the world. The weaponry can be ranging from long swords to short swords, broadswords straight swords, curved swords, and any kind of sword was here. Not only that but there were spears, axes, and any kind of weapon with sharp or blunt edges.

All of the Arturias, Rins, Sakuras, Illyas, Miyu, Astraea, Jaguar-man, Irisviel, Kiritsugu, EMIYAs, Ritsuka, Mashu, Fou, Da Vinci, Neros, Jeannes, Okitas, Musashi, The Knights of the Round, Merlin, Lancer Cu, Rider Medusa, Caster Medea, Berserker Heracles, and Sasaki Kojiro. Were beyond shock at the sight that they are seeing right now, Gilgamesh on the other cannot help himself but let out a laugh while his Caster and Kid self just stare at the world with fitness.

"Shirou..." uttered Arturia and her counterparts in sadness.

"Emiya-kun" uttered Isthar and her Rider self in shock.

"This can't be!?" Ereshkigal said in shock.

"Senpai," Parvati uttered.

"Wow! What a sight, to behold!" BB said in sarcasm.

"Not now!" Melth shot back.

"Onii-chan," Illya, Kuro, and Miyu uttered in sadness.

"Shirou..." looking at the red hair man, Sitonai could feel the sadness around this world.

"Shirou..." tears began to fall from Astraea's eyes.

"Shirou," Jaguar-man looked at the boy.

Irisveil could not help but cover her mouth in sadness, she could hear the scream and agony of this pitiful world that his son hold.

Kiritsugu was now busy trying to calm Irisveil from her sadness. EMIYA and EMIYA Alter didn't say anything. However, EMIYA and EMIYA Alter had one thought in mind.

"Looks like he fail," those were the only things that both counterparts can think of in this world.

"My praetor," Nero and her counterparts said in awe and sadness

"Damn..." Jalter said in awe.

"What a pitiful world," Jeanne D'rac uttered in sadness.

"Wow! There are many swords!" Okita alter said in excitement.

"Read the situation!" Okita smacks the head of her alter.

"Wow, just wow..." Musashi uttered in awe and sadness.

"My queen, so this is your Noble Phantasm," the knights of the round uttered in awe.

"Why does this remind me back when I fought father," Mordred thought in dread.

Under a rare chance, Merlin was quiet for the first time, while Fou just stare at the land in awe as he still remembers this was how the land looks after he paint them with corpses and despair.

"Damn! The kid has it rough, huh..." Cu said with a smile.

"What a sight," Medusa said.

The screens in this land remind her back when she was in the shapeless Isle.

"Now this, what I called inspiration," Medea said.

Berserker Heracles didn't utter any words, as he just stare at the land.

"What a pitiful sight," Kojiro said.

"Hahahaha! To think, this is the fate that you have chosen Faker! Quite the pitiful sight I must say," Gilgamesh laugh without any care of the world.

Both Caster and Kid were just left in silence as they do not want to get into whatever mess he was about to make.

Both Ritsuka and Mash were left in silence, sure the land can be called beyond what they expected such a cheerful guy to have, especially the feeling of dread that the world is giving out to everyone that stepped on this land.

"I could make a painting out of this,"
Da Vinci said.

"Never thought that Shirou-san Noble Phantasm would be a reality marble," uttered the kohai in awe.

Everyone turned to Mashu for a moment and yelled out "WHAT?! A REALITY MARBLE?!"

"Y-Yeah..." Mash said nervously.

Then everyone looked at Shirou, making him let out a sigh.

Guess I got to explain it now, huh..., Yes it's one of my Noble Phantasms, it is a type of special reality marble that I alone can manifest into the real world. You see, this world can be called a modified version of a reality marble that embodies my internal world and imprint that world into reality. Where usually reality marble only imprints itself upon the world as a bounded field, mine is far different as this ability pretty much overwrites and bends space and time into my bidding, which let me overwrite the world order that can create a small singularity... Usually, this Noble Phantasm can be classified as an anti-world because it property to overwrite the world entire order and turn Gaia into my bitch for a temporary time,"

Nearly all of the audience was at shock by the explanation especially the fact his Noble Phantasm can turn Gaia into his bitch for a temporary time, and the fact he got a reality marble for a Noble Phantasm.

"Is there a problem, with my Noble Phantasm master?" Shirou asked.

"No, it just... That I was surprised, that your Noble Phantasm is a reality marble," the master of humanity answered.

"Yeah... Thought the feeling, this world give kinda remind me of Emiya-san's owns Noble Phantasm," Mash said.

"My~ what a fascinating Noble Phantasm you own Shirou," the genius then pull a glass and recorder out of her pocket. "Now if you don't mind me asking, some detail about its origin and capability,"

"Please do as you wish," Shirou said.

"Alright, then first. How does the structure of your Noble Phantasm work?" asked Da Vinci.

"Under normal circumstances, the mechanic for Oath Under the Snow is pretty complex, because, without the backing of my Saint Graph, there's no way I can bring forth the full capability of my Noble Phantasm,"

"How complex are we talking about?"

"Well, the sheer mana reserved for me to use if I were just a normal human would kill me, because a normal body of a mere mortal cannot bare the strain and weight of this entire world,"

"I see, how does the Noble Phantasm work exactly?" Da Vinci asked.

"Besides bringing forth my reality marble, it can infect and overwrite the world order for a temporary time that is. This noble Phantasm works like a parasite if I bring it out to the real world rather than transporting you all into my