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Last Savior Vol 1 Chapter 1

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Sector 1 – Bose Nova 2015

Exiting from a Tokyo tollgate was a sightseeing bus with a party of people, as it entered the Tokyo Expressway.

The scenery of the clear sky under the expressway covered their windows.

As they looked up at the tall buildings that pointed up towards the sky on both sides of the road, the students let out gasps of admiration.

“Left, right, all I see are large buildings!”

“So this is Tokyo!”

The students clamored in unison, and the inside of the tourist bus gradually bustled with activity.

Skysc.r.a.pers, enormous advertising billboards and more. The complex dimensional network of roads flowed through the window.

For these traveling students belonging to a high school in a provincial town, the unfamiliar sights of Kanto was thoroughly exhilarating.

But amongst those in the cla.s.s excited by the outside scenery was also a group of boys absorbed in a game of cards. And within the group of boys hard at work on old maid, one boy muttered.

“…..All in all, I’d say Nanagi is a lucky boy.”

Across from the boy who spoke, left puzzled as to what kind of card he drew—Nanagi Ryouga was staring fixedly at the card with an uneasy expression. He finally pulled out the selected card, and having seen its design, Nanagi was left speechless.

……It was a joker.

And he, who had drawn the winning old maid[1], was the so called lucky boy.

“Why am I the lucky boy?”

The circle of school friends playing old maid pointed out to the clueless Nanagi in what may have been their vexed feelings.

“No kidding! Today’s social science field trip! ‘That girl’ that is a transfer student is in your group!”

“Transfer student……you mean Kisaragi?”

“That’s right! It’s obvious I’m talking about that young, girlish, attractive transfer student!”

As he gave his angry cla.s.smate an incredulous look, he listened to another complaint.

“I never heard that after the groups had been decided, such a cute girl would suddenly make her appearance! No matter what you think, this is on the performer level! Even with all the girls in our school, she’s the top rank!”

“And what’s more, she joined the group short exactly one person, Nanagi’s group. How fearsome……your good fortune that is!”

“You keep saying Nanagi is a lucky boy. What the h.e.l.l is this lucky boy you keep calling me?”

Having said so, Nanagi gave a sideway glance at the schoolgirl sitting a few seats in front.

In the front of the bus elegantly resting her chins against the window, was the mentioned transfer student—Kisaragi Mana.

Long, black hair and a slender body with porcelain white skin.

It was a hurriedly put on uniform, but on Kisaragi, it seemed fas.h.i.+onably worn.

Hanging below her chest was a thin chain necklace, with an embedded cross.

And together with the accessory, a graceful scent and cleansing atmosphere wafted, from which rumors spread of how she was originally from a religious school.

Certainly, in Nanagi’s eyes she was a fairly beautiful woman.

It couldn’t be helped that his cla.s.smates were fascinated by her cleanly beauty.

“But……isn’t that girl a little cold?”

She had introduced herself on the first day of her transfer, spent time talking to the girls of the cla.s.s, and Kisaragi often smiled.

She was smiling on the outside but……it there was no helping that Nanagi found it to be a fake smile stemming from a shallow pretense. That was the impression that naturally came to him.

Even now, Nanagi could see the look of extreme ‘boredom’ in her gaze.

“……”

Suddenly, Nanagi’s smartphone was notified of an unexpected short message.

It was—from Nanagi’s sister.

Nanagi temporarily laid the card in his hand aside.

『It’s rainy in s.h.i.+zuoka. I hope it’s sunny in Tokyo. I’m looking forward to onii-chan’s present. 』

The contents were that simple.

But even such a trivial mail was heartwarming, and Nanagi broke into a full smile.

『It’s bright and clear in Tokyo. I’ll work hard on the present, so you and dad look forward to it. 』

Nanagi wrote the reply and quickly sent it.

And as they indulged themselves in games of old maid without end, the bus traveling through the maze of what was the Tokyo Expressway had at long last, arrived at Rainbow Bridge.

Also could be seen at their destination, was a structure characteristic of a giant.

“Oooohhhh! I can see it! Isn’t that the Tokyo Big Sight?!”

The hands of the members playing old maid stopped, and Nanagi and the others excitedly gazed out the window.

Four t.i.tanium gold colored roofs in the shape of inverted triangles could be seen.

—Tokyo Big Sight

The modernly modeled building was famous enough that the students recognized it in a single glance, despite it being their first time seeing it.

“I’ve never seen it on TV or the internet…so that’s the real thing! Ahh….looking at it like this, it gives off the impression of a deeply moving silhouette!”

“….Ahem”

Facing his awestruck friends, the girlish looking Nanagi proudly explains.

“Those inverted triangular structures are 8-story buildings known as the ‘Conference Tower’. We will be listening to a keynote speech in the 7th floor of the conference tower, in a room used for international conferences capable of housing a thousand people. By the way, it seems the exhibition area we’ll be touring throughout the morning is the eastern exhibition hall!”

Before Nanagi, who had announced his extensively informed knowledge, some of his friends’ faces twitched.

“Na…Nanagi, you sure know your stuff.”

“Well, Nanagi has been eagerly planning the order in which we visit the booths for some time now after all. You’ve really been looking forward to it, haven’t you? Today’s social science field trip.”

“Wow…..I just lost interest!”

“Why did you go from admiring to losing interest?! W-What?!?! Is it so bad to be interested in it?!”

Nanagi’s face reddened, as he perked his shoulders up in protest at the friends who laughed and made fun of him.

 


Future Science Expo 2015.

Open to the public on an early autumn day, the event taking place in Odaiba’s Tokyo Big Sight was managed under the leaders.h.i.+p of the Ministry of Economy, Trade and Industry.

According to the pamphlet, the purpose of the event was ‘The a.s.sembly of Technology’, as the headlines stated.

Prospective cutting-edge technologies of future key industries are introduced to the general public, the next generation of engineers sought out, and appeals to foreign countries of j.a.pan’s technological powers made.

The event was, in short an ‘exhibition of leading edge technology’.

The machinery and equipment of research inst.i.tutes and specialized experimental facilities of large corporations kept from prying eyes under conditions, could be seen by their group at the venue.

Scholars and engineers would announce their nerve-wracking research. By doing so, the presenter might be able to find an investor willing to fund his/her research.

This was a place of such encounters.

……Be that as it may, Nanagi and the others had nothing to do with the adults’ plans; they were no more than the usual attendee.

If there were to be one point that differed them from the general attendee, it would be that they had to later write a report on the presented speeches, and submit it to their teacher.

As part of their morning group activities, they would visit arranged places discussed beforehand. Things he saw, things he heard. Both came as nothing but new findings.

One such example was the dolphin-type lifeguard robot that swam around like a fish in the small pool specially installed in the venue.

There were also conversational receptionist robots that offered responses indistinguishable from that of a human’s on display.

There weren’t only robots; he heard explanations, such as one on using the energy generated by the satellite solar panels in the form of microwave frequencies to send transmissions into s.p.a.ce, and was left completely in awe.

“Over here is the AR—come over and experience the world of Augmented Reality.”

Nanagi and the others suddenly stopped by a booth, where they were distributed digital cameras from a receptionist.

And like this, they entered a place that seemed to reproduce the general-styled living room in a home.

“Please turn on the camera, and see the living room through the camera.”

Following what the female aid told him, Nanagi turned on his camera.

And he looked through the camera at the center of the living room.

“……!”

Nanagi peered through the camera in what should have an empty s.p.a.ce, and on the LCD, could see a large TV.

As he tried to look at the surroundings, in what should have been an empty screen, a refrigerator and gaming console were reproduced.

“Cooooollllll!”

It was no common three-dimensional image.

Holding the camera in place, he moved towards the TV that should not have existed as if it were real, and as he approached closer, it drew farther. From the very same position Nanagi was standing in at a visible angle, the manifested images were changing.

The female aid spoke to the speechless Nanagi.

“This uses AR technology, and is called the AR catalog service.”

“AR catalog service?”

The female aid picked up a piece of A4 sized paper in the living room.

This caused the reflections through the camera to change, and the TV sprung forth from the paper the female aid had lifted up.

“Drawn from this paper is a ‘marker’, a special design the camera detects, and matches its position to the CG three-dimensional image, creating an image construct. If, for example, you were to buy a replacement for a large home appliance such as a TV and install this marker in your own home, the location in which you choose to arrange the TV can be conveniently identified. This marker recognition software can be used on your smartphone free of charge.”

“I get it now. This is the so called virtual reality?”

“It’s often confused, but AR and VR are two separate terms.”

The aid made a wry smile, as she gently replied.

“VR, short for virtual reality, is a computer generated technology that simulates the five senses as an illusion. Compared to that, AR is a technology that augments the contents of human cognizance.”

“Hmmm. I kind of get it, but I kind of don’t.”

“The digicam in your hand carries an annotation display feature in the originally empty s.p.a.ce. The annotation will make the CG be displayed again. Was that explanation satisfactory?”

To the female aid who kindly explained this to him, Nanagi made a poker face smile.

Of course, he didn’t really get it.

After he said his thanks to the aid, Nanagi joined up with the friends in his group.

At the time when he finished carefully looking at the display items, Nanagi noticed the time on his watch.

“c.r.a.p! It’s already this late!”

“Hm? Did something happen, Nanagi?”

One of the boys in the same group as him asked.

Nanagi opened his pamphlet and showed it to the members in his group, as he said

“This over here. This. Soon in East Hall 3, the Future Electronic World performance is going to start. In about 4 minutes.”

The name may have been showy for an event, but they took place in hour intervals.

And standing center-stage, some demonstrator would display their products.

A seemingly fainthearted girl with gla.s.ses answered Nanagi.

“Wh-wh-whaaaaa—th-then we better hurry!”

The girl in the same group as Nanagi was the cla.s.s president, Fujino Inori

With Fujino taking the lead, Nanagi’s group hurried began to move.

“……Hm?”

Nanagi noticed Kisaragi Managa was making a long face as she walked beside him.

……It wasn’t as if there was nothing to talk about today.

During group activities, when everyone should have been acting together, she seldom smiled.

Somewhat worried, he subtly questioned her.

“……Kisaragi-san, do you find this event uninteresting?”

Not having expected Nanagi to start a conversation with her, she made a slightly started face.

But she immediately returned to an unsociable face void of expression, and exited from his line of sight.

Without ignoring Nanagi, her lips opened.

“If I remember correctly, your name is Nanagi-kun?”

She asked in a questioning tone.

Having only just transferred schools, it wasn’t expected for her to match the names and faces of her cla.s.smates yet. But she had correctly guessed Nanagi’s name.

“I’m sorry if I got your name wrong. But my family is constantly on the move, so I don’t know when they will relocate again. The thought of meaninglessly remembering your names hasn’t really crossed my mind.”

“What are you saying?”

“I’m saying I don’t have any intention of getting along with you guys.”

“……Huh?!”

Her clear, distinct declaration left Nanagi at a loss for words.

Kisaragi faced the taken aback Nanagi, and brushed through her own beautiful hair.

“‘Is this event not fun’, you say? Isn’t it obvious?”

No longer wearing a forced smile, she thrust her merciless words at Nanagi.

“What could be so interesting about the likes of a future of expectations?”

 


At first, the group had inspected the set displayed items from start to end.

With lunchtime approaching, Nanagi and the rest were in the middle of moving to the cla.s.s’ rendezvous point.

A boy in the group asked the seething with rage Nanagi,

“……Why are you in such a bad mood, Nanagi? Weren’t you the one looking the most forward to this social science field trip?”

“Yea….some things happened.”

As he scratched his head, Nanagi cursed out in a low voice.

“What’s up with her. All insensitive. Here I was thinking she might be bored because she’s a transfer student and doesn’t have anyone she’s close to……then she says she’s not interested in being friends with us?! If she’s like that, I’ll never be friends with her!”

“What are you muttering on about, Nanagi-kun?”

“N-nothing much.”

Nanagi having avoided the question, forced a smile towards a girl in the group.

The cla.s.s president Fujino glanced at him from the side as she spoke to the group members.

“Umm, umm……the performance is over and it’s about time for the a.s.sembly but……for other places you want to quickly visit, does anyone have one?”

Fujino awaited the group members’ response.

No one felt like expressing their thoughts to such a meek appeal.

Each and everyone one of the members in the group wore an expression of fatigue, conveying such feelings as “this much is good enough. We’re spent,” to her.

They had lasted 2~3 hours, though having walked through the venue the entire time since morning, the members were in a worn out state. Nanagi too, having been able to visit all the places he wanted, was satisfied.

“……huh?”

At Nanagi’s sudden murmur, Fujino timidly asked.

“W-what’s wrong, Nanagi-kun?”

He spoke aloud what he had realized.

“……umm, this is strange. Kisaragi-san isn’t here.”

At Nanagi’s mention, the other members also came to be aware of the situation.

Three boys, two girls. The six member group was short one girl.

The only one nowhere in sight was Kisaragi Mana.

The members searched the surrounding crowd, and said in unison.

“Huh, she’s not here!”

“I wonder if she got lost. Kisaragi-san, where did you end up going to?”

“Are you kidding me? a.s.sembly time is right around the corner. Won’t it be bad if we don’t find her soon?”

“Wh-wh-what should we do, Nanagi-kun?”

“Why are you asking me that?”

Nanagi cast a troubled look back at Fujino, her eyes watering as she pleaded for his opinion.

And then he had a flash of inspiration.

“…Does anyone know the number on her smart phone?”

Before the group activity commenced, Nanagi and the others had informed each other of their contacts.

Nanagi did not have her number, but the other members might have learned of it.

“Do you guys know it?”

“I don’t.”

“Me neither.”

“...I also don’t know her number. Even if I asked her, she would always give me the slip.”

“Who would have thought even the cla.s.s pres didn’t know!?”

Nanagi went from slightly troubled to completely shocked.

Nanagi himself couldn’t exactly blame the others but……Kisaragi had not given the other members her number. To not even give it to the cla.s.s president, it would seem that her words of not being interested in playing friends with the cla.s.smates would genuine.

With mixed grief, he looked around his surroundings.

The surrounding crowd was considerably large.

Fed up with these feelings, Nanagi made a reluctantly made a proposal.

“Anyway, we have to hurry and find Kisaragi. She shouldn’t have gotten far. Let’s come back here in 10 minutes, and if we haven’t found her, we’ll consult with the teachers.”

Nanagi and the rest split off in all directions and began their search for Kisaragi.

As he moved within the crowd, Nanagi murmured successively in a fit of impatience.

“Seriously! She’s not only rude, but also makes trouble for everyone….she p.i.s.ses me off.”

Should he find her, he would not be satisfied if he did not at least give her a piece of his mind.

Shrugging his shoulders, he began his search for Kisaragi in the venue.

 


Kisarai Mana.

A girl who transferred one month ago, and whom Nanagi had yet to become acquainted with.

What he did know about her was based on rumours he had heard from the boys in the cla.s.s, and whose credibility were questionable.

Like how she had lived abroad and was fluent in foreign languages such as english and chinese.

Or how she won the chess champions.h.i.+p and excelled in academics even in foreign schools.

All he only heard about her were seemingly unbelievable rumors.

Even if those frequented rumous were false, it wasn’t uncommon for people to take it for true upon seeing the graceful air emanating before Kisaragi; it was such foul play.

Kisaragi Mana. With a horrible att.i.tude to boot.

Nanagi was searching high and low for such a girl.

“Where the h.e.l.l did you go Kisaragi-san?!?!”

He spouted out his irritated emotions.

Thinking how she couldn’t have gone too far, he believed she would quickly be found.

But reality proved contrary to his expectations.

With Kisaragi nowhere to be found in East Hall 3, Nanagi had wandered into the area of East Hall 1 before he knew it. If he still couldn’t find her, it was possible that she may have gone to East Hall 6 by crossing the center pa.s.sage that connected to the other side.

In his search for Kisaragi, Nanagi looked restlessly within the grounds as he walked.

In such a completely inattentive state, Nanagi b.u.mped shoulders with a pa.s.serby in front of him. He hurriedly apologized to the person he b.u.mped into.

“S-sorry!.........wait, what?”

Nanagi lowered his head in front, but the person was already gone.

The man he b.u.mped into wore a hooded s.h.i.+rt and baggy jeans and certainly wore the air of one of those bad-type characters.

The man took no interest in Nanagi, nor did he stop to pick a fight, and walked off.

Nanagi stared at the back in amazement as he walked into the distance.

“….I wonder if he was in a hurry.”

He never turned back towards Nanagi. He was busy looking around, appearing to have been searching for something. He found his friends before long, and after a few other men joined them, began talking in place.

Nanagi couldn’t hear what they were saying but……they’re att.i.tude was deadly serious.

Suddenly, Nanagi’s eyes were attracted to the wristbands the men wore.

—A symbol of an inverted ‘V’ superimposed on an upright ‘V’ in the shape of an eye.

The wristbands on the men all bore the same symbol.

“Is it a mark of their team or something?”

After a long discussion while standing in place, the men split off into the venue.

Nanagi watched them for some time, but he couldn’t afford to dawdle around forever.

He also had an objective to promptly find Kisaragi.

As he pulled himself together, Nanagi once more began his search for her around his surroundings.

Though as it was…..he had already lost the drive to search for her.

“Over here might also be no good. Maybe the others found her. Would it be better if I went back?......”

Having not found her, he was left only with feelings of distress. Nanagi returned to the predetermined spot he had decided with the group members in East Hall 3.

And as he was about to leave the place, his feet suddenly stopped.

“Experimental model for……a quantum computer?”

Near the central region of East Hall 1, he came across the huge signboard panel.

Over there where the spectators gathered, enclosed in surrounding chains rose an enormous clock tower.

It was a complex mechanical tower whose height was three times that of a human.

Nanagi was able to immediately come to the understanding that it was a clock tower due to a large electronic bulletin board installed on the center of the machine. In large numbers, the time was displayed. The red numbered lights continually indicated the current time above the bulletin board in silence.

The time was clearly indicated in hours, minutes, seconds, each a column following their respective order. And in the column successively following seconds, contained a number changing within a moment’s notice, that the exact number was imperceivable.

Nanagi read aloud the life-sized, explanatory panel placed in front of the tower.

“A model on the principles of quantum computers, huh. The world’s top contender for most accurate time display……what a pointless thing to compete for. Isn’t it just a normal computer with high calculative performance?”

The huge machine before him appeared to have been an experimental model for a ‘quantum computer’.

As for what exactly a quantum computer was, Nanagi did not have the slightest clue.

Just that the purpose of the computer was to tell time.

To use such a big device, that was only capable of doing things a watch could, was pus.h.i.+ng it.

Not particularly feeling any rise in excitement, Nanagi vacantly looked up at the clock tower in front of him.

The time continued to count up, and soon hit noon.

In the exact instant the clock display turned the 12th hour.

“……?”

—Nanagi’s field of vision distorted.

The bustle from the surroundings rapidly faded, when Nanagi felt an indescribable chill.

His head spun, and his ears buzzed. The clock tower stretched out wide, as if being pulled to the left and right, and then immediately returned back to normal before his very eyes.

……the sound of the faded commotion gradually returned to his ears.

“—The end is coming.”

It was sudden. A voice from beside him took shape.

Nanagi turned around in a fl.u.s.ter, and there stood a young girl.

She had probably been there from the start.

She was no doubt an ordinary young girl.

Short blond hair. Blood red eyes. And no traces of j.a.panese descent.

A pet.i.te, beautiful girl with a lovely appearance that differed from Kisaragi’s.

She gazed at Nanagi, full of loving gentleness.

Nanagi realized this and was struck speechless.

She was wearing—a wedding dress.

It was not the plain, simple clothing those attending the Future Science Expo wore.

Nanagi stared at her appearance in the wedding dress in mute amazement, but pulled his thoughts together and asked.

“….Who are you?”

“A pleasure to meet you. So we meet again. My name is Sophia.”

A pleasure to meet you, and so we meet again.

Her impa.s.se introduction left much to be desired, only having revealed that she was called Sophia.

With a smile, she looked Nanagi in the eye and began to talk.

“In mankind’s history, innumerable predictions telling their end have been made. Take for example, the writing in the sacred texts that foretell the coming of the apocalypse, and the calamity the astrologers feared would befall on them from the heavens in Renaissance France. No matter what era, there will be those that believe in ‘the end of the world’ and be haunted in fear. However, it also stands that not a single one of the ends they believed in were realized. That is why we are living and continue our existence today.”

“……What are you saying? Are you ok?”

“Be that as it may, the ‘genuine prophets’ have yet to leave behind the remaining predictions. He who established the symbol of the swastika for the former Third Reich had said so. ‘We destroy not out of fear, but out of faith,’ 2039.”

Her cryptic, one-sided and seemingly aimless speech left Nanagi baffled.

As he stayed silent following the quote, she smiled in sorrow.

“I am a person of the beginning, and a person of the end. I am one who shall steal your heart, one who will bestow upon you a fighting weapon. Right here at this very moment, the words I can exchange with you are severely limited. That is why to accomplish what I should accomplish only am I here.”

She told him this with a somewhat lonely expression.

“There is no more time—bose nova will begin here.”

“Bose nova?”

“Yes. The beginning of your battle.”

“My battle?.....”

Not knowing how to respond, he mimicked her response like a parrot.

Sophia soon held out one of her hands towards Nanagi, in it was a pocketbook.

“I will entrust this to you.”

“…What is this?”

“This pocketbook is something you people will need.”

The pocketbook she handed over was considerably aged and creased, with a black leather cover. It had the thickness of an address book. There was nothing recorded on the front cover, but the innards seemed crammed full of content. He confirmed it when she brushed along the sides of the paper.

Sophia made no room for refusal, and Nanagi hesitantly received the pocketbook.

“If you are to ever wish to return here, this pocketbook will serve your needs.”

“Huh? Me, return here?......”

“You will surely face a great, many choices. No one decision is more correct than the other. But you must absolutely not hesitate to the very end. You alone, are our last hope. Only you alone can end it.”

“Like I was saying! Just what exactly have you been saying since a while ba—mmgh!!”

Nanagi’s words were forcibly interrupted.

—Sophia’s small lips pushed against his own.

“!!!!!”

Her sweet breath brushed across his cheeks.

An intense heat surged throughout his body, as his face burned a beet red.

As their lips separated, the strand of saliva connecting them broke off.

Sophia, having stolen his lips, wore an enraptured expression, her eyes moist and her face dyed red.

As if in embarra.s.sment. As if in happiness.

And lastly, she showed a lonesome smile.

“W-w-wh-wh-what did you just!?!?!”

It was the first time his lips had touched that of a girls’, and he was left shaking in a terrible tremor.

He could no longer think of think of her as another stranger.

Just remembering the sensation of her lips made his body quiver, and erupt in heat. His heartbeat and breathing was considerably thrown off rhythm, as he shouted within himself ‘Calm down!’ in earnest. Nanagi frantically tried to cool his flushed face.

Sophia gazed at Nanagi, with reluctance to part, and then lovingly.

And then immediately after Nanagi blinked his eyes.

In the moment he shut his eyes, Sophia vanished before him.

“…….eh? You’re kidding, right?!?!”

He had no understanding of what had happened, but he began searching within the venue for Sophia who had disappeared before his very eyes. But no matter how hard he focused his eyes, Sophia’s appearance was nowhere to be seen.

It had been a mere instant.

In no less than a blink of an eye, a person had vanished in front of him.

“Was I dreaming?”

His surroundings flourished, with people coming and going no different from before.

Until just a moment ago, a showy young girl wearing a wedding dress should have been standing there. And as if to confirm that she was never there from the start, there were no signs of any changes in his surroundings.

Nanagi slowly touched his own lips.

That feeling. That warmth……couldn’t have possibly been a dream or illusion.

As his cheeks flushed once more, Nanagi stood there in a daze.

“Hey, you.”

Someone had called him out once again.

It was not Sophia’s voice. A voice indistinguishable from that of a boy or girl. An androgynous voice.

He looked over to see a figure in a black trench coat standing behind him.

A boy…….wait, a girl?.....

The person who had rudely addressed Nanagi was about the same age as him.

Short black hair. Studded earrings. A sharp, piercing gaze that gave off a cool impression.

As beautiful as a girl, as imposing as a boy.

The gender ambiguous pressed towards Nanagi with terrible menace.

“Where did that girl just now disappear off to? What did you talk to her about? Answer me.”

The figure gripped his collar.

From the cuffs of the coat, a thin key chain wound around the wrist could be seen.

Inscribed on the metal plate was the symbol of an inverted V superimposed on an upright V that resembled an eye.

It was the same mark carried by the men he b.u.mped into some time ago. In other words, an a.s.sociate of theirs.

……They might have been searching the venue for Sophia.

“What a rude fellow, doing this out of the blue.”

“Whatever, just answer my question. What did you just talk to that girl about? Who are you?”

That’s what I want to ask!

As he thought so, Nanagi glared back at the figure.

His eyes were suddenly attracted to the coat’s breast pocket.

There, he saw a leather belt shaped like a holster. And stored in it was——a handgun.

“….!”

Realizing where Nanagi’s line of sight was directed, the figure quickly covered her coat.

Letting go of Nanagi, the figure completely slipped into the crowd and disappeared.

When the figure could no longer be seen, Nanagi nervously murmured in a cold sweat.

“I-I might have been seeing things……right? What was that all about?”

He had only caught a glimpse of it, and could not be sure if it was actually a gun.

Left in bewilderment, Nanagi finally noticed the weight of the object in his hands.

—It was the strange pocketbook he received from Sophia.

The pocketbook was real. And there were others who had seen Sophia.

That would mean his encounter with the young girl named Sophia was no dream or illusion.

For a while, he stood there in place, having completely forgotten about searching for Kisaragi.

A phone call from the cla.s.s president, Fujino, had finally brought him back to his senses.

….Kisaragi appeared to have been carefreely eating ice cream in front of a store.

On hearing news of Kisaragi’s discovery, he set off as if he finally remembered to do so.

The Future Science Expo was supposed to end only in excitement.

But Nanagi began to be enveloped in a strange feeling of uneasiness.

 


Shortly after, they were helping themselves to an all-you can-eat lunch buffet inside a restaurant found within the venue.

Nanagi’s cla.s.smates had once more gathered in the entrance hall, where roll-call one by one would begin. Their destination was the side of the entrance hall. Over there would be a six-floor long escalator.

After ascending the escalator, they would climb one additional floor, where they struggled to their intended destination. There lay the Conference Tower on the 7th floor of the Tokyo Big Site.

They had arrived in what was called the International Conference Hall, whose size rivaled that of an opera house.

The entrance resembled the doors in a theater. Once he pa.s.sed through it, his eyes glittered as he looked up at the tall, s.p.a.cious ceiling.

It was a theater, with a vast stage that wasn’t a stage.

Nanagi had searched up beforehand, and found the large conference room could accommodate 1000 people, but….seeing it firsthand, he felt it was large enough that it could accommodate far more people.

“Holy! Cow! It’s huggee!”

“I wonder if you could bring yourself to act less shamefully, Nanagi-kun. I find it embarra.s.sing as your cla.s.smate.”

The one who poured cold water over his excitement was Kisaragi Mana, who sat next to him.

And for Nanagi, the same could be applied to her, who messed up the group activities because of her self-centered actions. Annoyed with her blunt att.i.tude, he forced a stiff smile.

“S-So Kisaragi-san is the one seated next to me.”

“That’s right. Do you have a problem with that?”

“N-No. I don’t really mind.”

Beside the snappy Kisaragi, he had no choice but to keep quiet, unable to talk freely.

Nanagi took out a printout that was distributed in his school from his bag.

On it was the time schedule for today, and written information on the keynote speech they were scheduled to hear.

“The future of quantum computers, huh.”

Judging from the name, he had a hunch it would be a plain, difficult type of speech.

The teachers had deemed it as ‘material at a level that even high school students could understand,’ but Nanagi was slightly uneasy as to whether he would be able to listen until the very end without falling asleep.

“I need to write a report on this, so it would be bad if I miss the speech.”

Nanagi grumbled, and then the ceiling lights began to be cast.

With the exception of the stage, the audience’s seats were pitch dark.

And from inside the stage, a middle-aged man in a suit walked out.

The man gave off a slovenly appearance, bearing an exhausted expression, his white hair unkempt, with a stubbled face, standing hunchbacked.

And along with his appearance, came a round of applause.

The man must have been the presenter for the afternoon’s keynote speech.

“Testing. I’d like to thank everyone for taking the time to come here today. My name is Date Keizo, and I will be presenting the speech on ‘the future of quantum computers’. I am a D.Sc. in the research of quantum engineering. I work in an office building of the National Inst.i.tute of Informatics, forty minutes away from here by train.”

The presenter used the microphone and introduced himself as Date.

A large, white screen was lowered on the stage.

On the white screen, the projector turned on.

In the beginning, the only thing projected on the screen was—the number, ‘2’.

 


“How fast are the personal computers we use capable of running at? In this lecture, let us first broach the topic of how fast computers can run.”

Date scratched his head and continued.

“The component that determines the processing speed of our computers is the CPU, as I’m sure many of you are aware. Let us delve further into this component we call the CPU. The inner components of a CPU take on a very complex structure, crammed with micro-components naked to the visible eye, that when linked to a circuit, leaves no part unaccounted for. If we were to go to the extremes, one could say we could accelerate the CPU by accelerating the exchange of electrical signals in a circuit.”

Date made a bitter smile.

“But a while back, the genius physicist known as Einstein had established his famous theory of relativity. According to this theory, there is no object that is capable of moving faster than the speed of light. That is to say, even if we were to quicken the transmission of electrical signals, the electrical signals cannot exceed the speed of light—in other words, 3•108 m/s. If we are to only rely on the quickening the electrical signals themselves, we will be come across the obstacle known as the speed of the light.”

In his notes, he wrote: Transmission of electrical signals faster than the speed of light is impossible.

“But researchers, thinking they cannot increase the speed of computers, have immediately switched to an alternative method. That method is ‘downsizing’ of the CPU.”

Nanagi must have found Date’s style of speaking interesting, because he was listening so attentively he forgot to take notes.

“In recent years, the increase in computer processing speed is namely a.s.sociated with CPU downsizing. An endeavor to shorten the distance between these processing components, so to speak. The theory behind it is simple. It is obvious that compared to visiting a friend’s house 1 km away, you would much sooner arrive at a friend’s house directly neighboring your own. Every year, there is rapid progress in downsizing, and the number of components that make up a CPU increase.”

Having mentioned this, Nanagi and the rest had always wondered how the laptops, tablets and other devices at their house could get smaller, and yet have a higher processing speed.

According to Date’s speech, this was all thanks to downsizing.

“The single founder of the American Intel Corporation, Gordon Moore, had stated that we are approaching a future of CPU downsizing. That is the well-known Moore’s Law. Moore’s Law states that the number of semiconductors in a CPU will double every two years. If this law holds true, by the end of 2017, we will see the birth of CPU components the size of atoms, or possibly electrons.”

“A working computer the size of an electron……”

Nanagi felt curious how they would make such a thing.

“Now then. If we were to make computers run even faster, we would run into a big problem. The components that make up a CPU that have become miniscule in size will face a significant amount of ‘quantum noise’. That noise is something of the electron level, belonging to a micro-world, governed by laws completely different from the laws of physics we abide by. We refer to these sets of laws as quantum mechanics. From here on out, let us think about quantum mechanics—the laws of physics that apply only to the micro world.”

“The laws of physics that only work in the micro world……”

Date spoke as if several different sets of laws of physics existed.

“Let us apply the laws of quantum mechanics so that we may imagine it. Say there is a wall, blocking our destination. In order to cross the wall, we do not need to climb over or take a detour around it. If we were to abide by the laws of quantum mechanics, we can ‘phase’ through the wall because you and that wall can ‘simultaneously exist’ together.”

“No way!.....”

Having no reason to have heard Nanagi’s shocked mumble, Date unconcernedly explained on the stage.

“Please think of an electron particle as a baseball. In the transmission of electrical signals, the components collectively play catchball with this ball. But because an electron follows the laws of quantum mechanics, the incoming ball will unexpectedly split into two and teleport through on contact. There is no way to catch such a miracle ball, is there? The damage sustained in electric transmission by this erratic behavior is what we call ‘quantum noise’.”

Nanagi was left in bewildered amazement.

Date once more continued his explanation.

“——In two more years.”

Date finally pointed towards the ‘2’ projected on the screen.

“If Moore’s Law stands true, then we will see the limits of downsizing in two years. We will no longer be able to ignore the effects of quantum noise, and any further downsizing will be extremely difficult. In other words, progression of the computer will temporarily come to a dead halt.”

A computer progressional standstill.

Date had announced it would come in two years.

“Does this mean they won’t downsize computers anymore?....”

Nanagi mumbled to himself in doubt.

It wasn’t only Nanagi that was left dumbfounded; the majority of the audience were making similar faces.

“And now for today’s subject. I will now talk about the future shaped by quantum computers.”

The number 2 on the screen behind his back disappeared, as the new text ‘The next generation’s computer, the quantum computer’ showed up in its place.

“It is exactly as stated on the screen. The next generation high speed computer that will replace the current model that will reach a deadlock in two years, that I am dedicating my work towards, the quantum computer.”

Nanagi recalled the quantum computer clock he had encountered this morning in the eastern exhibition hall.

……That’s the next generation high speed computer?

It was by no means an idea he could easily accept.

“To grasp a better understanding of the quantum computer, we must first understand the ‘many-worlds interpretation’. This theory is still under scientific controversy, but broaches the existence of parallel worlds.”

Nanagi grumbled, unable to swallow his feelings of suspicion.

“Wait a second….parallel worlds? He just suddenly switched to talking about sci-fi material.”

Unconcerned with Nanagi’s feelings of doubt, Date eloquently proceeded onwards with his explanation.

“Let us a.s.sume this theory is correct. And to make things easier to understand, we will proceed with an interpretation slightly differing from the original, namely, that our future holds countless parallel worlds that branch off from ours. Chances are, the futures that we will live have been decided no matter how hard to struggle. And in actuality, until that point in time where our future has been decided, it is not the case that we may strive towards the many possibilities the future holds. The conditions in the world of quantum mechanics coincides with these conditions I have mentioned. If you were to imagine it, parallel worlds give off the feel of an overlapping state.

Date said, lightly shrugging his shoulders.

“Let us return to the previous topic at hand. The laws of quantum mechanics explains that in a functioning universe, the phenomenon where an electron particle exists simultaneously in two separate locations and instantaneously moves to another location occurs. The reasoning behind this strange electron movement is thought to be ‘electron superpositioning’. In terms of the many worlds interpretation, this would be the overlapping of parallel universes.”

The overlapping of parallel worlds……electrons were the underlying fundamental cause that lead to parallel dimensions. Nanagi’s thoughts gradually descended into chaos.

“Now then, the prelude has taken quite some time. With this, we can finally begin the discussion on quantum computers.”

Date said as he scratched his nose.

“Present-day computers have reached their limits in downsizing. And what is it that we should do to continue production of fast computers? Physicist Deustch at Oxford University found the solution in quantum computers. So what exactly is a quantum computer?”

Having raised that question, Date grinned.

“To phrase it shortly, it is a computational computer that makes use of parallel worlds.”

The extraordinary proposal that came out of Date’s mouth shocked Nanagi.

“Using this computer in our world, it can access other computers that exist in parallel worlds and perform parallel computation. By employing these computations, we can link the parallel worlds, in a state similar to the superpositioning electron. This is we call a quantum bit.”

The hall falls into dead silence.

“It uses an infinite number of computers from existing parallel worlds to perform calculation for a single problem. Its operational output is tremendous. How so you ask? The most employed encrypted coding in present-day computers is the RSA algorithm, capable of performing prime factorization decryption. Even if say, a super computer with THz of processing power were to attempt prime factorization of a 300 digit long prime number, it would take 150,000 years. The RSA code largely determines the time spent in its decryption. Even so, a quantum computer with the same specs made to compute this process would finish decoding it in less than a second. The various codes would be cracked, and the secrets from the world would disappear.”

“Whoa!”

It could pull off what would take a supercomputer 150,000 years in under a second.

The clock tower demonstrated in the exhibition hall left an impression far short of impressive, but having heard everything just now, Nanagi now thought it was an extraordinary piece of advanced super technology.

All of a sudden, a harsh noise resounded from the speakerphone.

The faces of the audience within the hall twisted in anguish at the unpleasant sound.

Wondering what was happening, Nanagi stared at the development on stage.

The power for the mike seemed to have been cut, as he saw Date tapping on the mike. A staff member rushed out from the back of the stage to help him. He fiddled around with the malfunctioning mike.

With Date having ceased his talk, the audience gradually became noisy.

“……Nanagi-kun?”

“W-What’s wrong, Kisaragi-san?”

“Is it me or…..has this hall become colder?”

In the seat next to him, Kisaragi was rubbing both her shoulders, as if it were freezing cold.

Now that she mentioned it, Nanagi’s felt his own fingertips growing cold.

It did not feel cold when he had entered the hall, but the room’s temperature seemed to have lowered little by little.

Soon, it felt like midwinter, where even their breaths could be seen.

The increasing coldness in the hall was accompanied by a growing commotion.

The speech was disrupted by a microphone failure. What’s more, the room had lowered to freezer temperature. They had been waiting since the equipment failure but….it didn’t take long before complaints were thrown around.

Nanagi too, found the cold too much to bear and rubbed his shoulders while s.h.i.+vering.

“What’s up with this freezing coldness!.....”

Out with his breath, came his voiced complaint of dissatisfaction.

Five minutes had pa.s.sed since the speech was disrupted.

Those who grew irritated at the staff’s inadequate display of ability to quickly allow resuming of the speech also were not few.

As the cold air whirled around in the hall, a strange unrest filled the room.

At that time.

“—Settle down.”

A voice suddenly could be heard without warning.

It was only that—a girl wearing a wedding dress stood on stage.

Not a single person in the hall was aware of when she appeared there.

And it turned out Nanagi knew the name of the lovely girl.

“Isn’t that Sophia!?”

Standing on stage was the mysterious girl who had stolen Nanagi’s lips.

And just what exactly was she doing on the stage?

There was no way that Nanagi, nothing more than a bystander, would know.

It was a mystery how Nanagi, seated in the rear of the hall, could clearly hear her voice without any use of a microphone. It was something entirely beyond reason.

Date and the staff stood still in wonder, making no attempts to stop her from speaking.

They stared at her in amazement, as if they had mistaken her for a spirit.

The audience’s attention all turned towards Sophia.

After looking at the quietened crowd, she soon spoke aloud.

“It’s a pleasure to meet everyone. And I’m sorry.”

Sophia offered words of apology to them.

“From this point on, you will be going out on a journey. Many will not return here a second time, and everyone can’t help but feel hurt. That is why no matter how many times, you must continue to be inquisitive. One day—man will find happiness.”

Her red eyes faintly began to glow.

Immediately following—the sound of an explosion resounded from the ceiling and the conference hall trembled.

“Whhaaaa—!!!”

The shaking of the hall prevented everyone from freely moving.

The ceiling was enveloped in a ma.s.s of crimson flames and the torn-up steel frames rained down incessantly on the hall. The remains of the ceiling crushed many in an instant, before their very eyes.

No one would have predicted that explosives were planted in the ceiling.

For Nanagi, the situation had already escalated to a tragedy caused by nothing else than an afternoon act of terror.

Nanagi looked overhead past the blown off ceiling and took a peek at the sun.

But the sky—was dark as night.

“A..total…solar eclipse….!!”

Nanagi muttered in shock, as he looked up at the sky.

Thousands of sparks poured down from the skies. A conference hall with nothing but casualties and screams.

Surrounding the sun painted black, an ominous ring of light.

The reality that unfolded before his eyes was other-worldly, and far beyond his comprehension.

“Humans are not perfect. Everyone wishes to be saved from one thing or another. That is why since distant times, and even now, people cannot help but continue to desire.”

Sophia announced to the people in the hall, who were unable to do anything but stand still.

“The world has always been waiting—longing for its savior.”

And soon, black rain came falling down from the torn open ceiling.

The mysterious liquid relentlessly poured down from above.

“So cold!....”

The black liquid that soaked his body was surprisingly cold.

The ice cold liquid continued to paint the hall black posthaste. With a texture resembling mud, acc.u.mulated to their feet, and submerged up to their backs before they knew it.

And then when the water level had reached Nanagi’s neck, the people in his surroundings…..disappeared.

His cla.s.smates. Those attending the speech. And even Sophia could no longer be seen.

In the freezing, still, sea of liquid, a single thought crossed his head.

Fight.

He fought for his life, continuing to stick his head out the surface waters.

He frantically searched for an exit, but nothing indicating an exit could be found. Submerged deep in the waters, the entrance to the conference hall had completely disappeared. He was cut off from all means of escape.

“……This can’t be!....”

Nanagi was at a loss for words, about ready to cry.

—Do not fear.

He felt the voice of Sophia, nowhere beside him, enter his ears.

But the freezing waters had rapidly drained him of his stamina and Nanagi, no longer offering any resistance, began to sink into the sea bottom.

In the recesses of his distant consciousness, he embraced the despair known as death.

 

Translator's Notes and References Jump up↑ i.e. he lost

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About Last Savior Vol 1 Chapter 1 novel

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