(Author-san: Let's start from Misaka Mikoto's perspective until she meets Touma, then we'll switch to Touma's perspective.)
[ The scene shifts to a month later. Misaka Mikoto hears a rumor from her senior, Shinobu Nunotaba, that clones of herself, commonly known as "Sisters," have appeared in Academy City!
At first, she didn't believe such rumors because cloning technology requires the subject's DNA information. However, she recalled that she had indeed provided her DNA map to a hospital out of good intentions when she was younger.
This made her eager to uncover the truth. So, Misaka Mikoto used a public phone booth in Academy City. With a flash of electricity in her mind, she used her ability to instantly trace Shinobu Nunotaba's origins, discovering that she came from the Seventh Pharmaceutical Research Center, the very place where she had provided her DNA map.
Knowing the location, Misaka Mikoto decided to infiltrate it directly to investigate. As soon as she stepped out of the phone booth, she froze,
"Wearing a school uniform is really not suitable..."
Afterward, Misaka Mikoto spent a huge sum of money on a set of clothes.
After checking into a hotel room and changing, she arrived at the entrance of the Seventh Pharmaceutical Research Center in the blink of an eye. ]
[ .....]
~Projection of All Worlds~
"Providing an DNA out of good intentions, it was originally well-meaning, but they used it to do something like this. There truly is a dark side everywhere..."
"A clone plan, huh? Since it can be broadcast, it's very likely true. Are they planning to mass-produce an army of LV 5s? If it's true, it's simply too terrifying."
"I have to say, Misaka Mikoto's initiative is truly maxed out. And your electrical ability is really outrageous; you can even hack into computers."
Everyone from other worlds was speechless upon seeing Misaka Mikoto's so-called "disguised infiltration" ... It was truly a perfect disguise!! She just changed her clothes. At least cover your face, too! Do you think the cameras don't exist?
.....
[Misaka Mikoto, who was supposedly "infiltrating," openly ran through the corridors inside. She just glanced up at a monitor, and with a flash of electricity, her figure instantly vanished from all surveillance.
This happened so quickly that even the security guards in the monitoring room didn't notice. Then, Misaka Mikoto simply placed her hand on the screen of the main door and opened it.
"Anti-theft monitors, infrared sensors, and electronic locks are all electrified security systems. So, this part is fine."
"Next, I just need to watch out for police patrols..." Misaka Mikoto opened the map of the research institute on her terminal, planning to go to the only room without surveillance to search for clues.
Here, she discovered many cultural vessels. Her hands rapidly typed on the computer, and after recovering the deleted data inside, she uncovered a plan.
" 'Railgun Mass Production Plan - Sisters' "
The plan was to change the originally accidental birth of an LV 5 into a 100% certain birth, with the original material being 'Railgun' Misaka Mikoto.
By injecting drugs to shorten the body and personality growth process, a body equivalent to Railgun could be cultivated within 14 days. However, after research by the supercomputer Tree Diagram located in space...
The Sisters' performance was less than 1% of the original Railgun's; thus, the plan was terminated.
Seeing this, Misaka Mikoto finally breathed a sigh of relief, loosening her clenched fists. Then she left the place.
"What was that all about? In the end, there are no clones of me. I really was a bit scared..."]
[ .....]
~Projection of All Worlds~
"What a useful skill! If I had this ability, why would I even go to school?! Afraid of not finding a job? It'd be a shame not to be a hacker."
"This isn't just electricity control—it's like the entire network recognizes you. Firewalls? Encryption? They step aside the moment you reach out."
This ability is just too useful! A casual glance at a monitor, and she instantly hacks it. Electronic lock doors open at her command. Deleted data is recovered in an instant. It's truly a waste for you to be a student; you're practically material for a secret agent.
And this seemingly amazing computer calculator, Tree Diagram, could it be the artificial satellite that Kamijou Touma accidentally hit back then? It couldn't be such a coincidence, right?!
~A Certain Magical Index World, Academy City~
"What? So it was a false alarm."
Misaka Mikoto, outside the video, also breathed a sigh of relief, but still felt a bit indignant. She provided her DNA out of good intentions, but it was used for something like this.
Fortunately, they only had one percent of her power. If they reached one hundred percent, what exactly were those Board of Directors in Academy City planning to do?!
"Onee-sama!! So cool."
Kuroko had already rushed over, her eyes sparkling with hearts. Onee-sama in clothes other than her school uniform was simply too cool.
Misaka Mikoto instinctively kicked the pouncing Kuroko away. Her previously somewhat depressed mood vanished, replaced by instant speechlessness as she looked at Kuroko.
.....
[The next day, Misaka Mikoto, thinking the matter was resolved, walked down the street. She then suddenly paused, her gaze shifting elsewhere, "What is this feeling? This power is similar to mine, no... It's like being illuminated by my own scattered power."
"Impossible, this can't be happening!! But..."
Misaka Mikoto followed the sensation and ran over, discovering a girl who looked exactly like her. The only difference was the goggles she wore on her head.
The time came at night. After spending time with Misaka Sister, catching cats, and eating ice cream, Mikoto gave up the idea of continuing to track her.
And Misaka Sister, after snatching the Gekota badge from Mikoto as her first gift, bid farewell to Mikoto and came to an alleyway.
Misaka Sister expressionlessly looked at the scrawny, white-haired man in front of her. She pulled out a submachine gun from the guitar case on his back, put on her goggles, and launched an attack.
"BANG—!"
"BANG—!"
"BANG—!"
With a series of gunshots, the white-haired man, hands in his pockets, didn't even pay attention. The moment the bullets were about to reach his head, they were all deflected back.
"Zzzzz—"
The goggles on Misaka Sister's head shattered into pieces, and blood flowed from her forehead.
The white-haired man impatiently walked over, a sinister smile on his face,
"What's wrong? Is it over already?!"
"Run, run, the further you run, the longer you live."
The white-haired man appeared on the rooftop, leaning against the railing, watching Misaka Sister's fleeing figure.
He then floated down, flipped, and landed on the ground. With just a light stomp, the scattered pebbles instantly knocked Misaka Sister to the ground.
"Cough..."
Misaka Sister coughed up a mouthful of blood. Her internal network continuously calculated possibilities, and she murmured her plan.
The white-haired man still had his hands in his pockets, already somewhat impatient as he looked at Misaka Sister, "If you don't run now, I'll finish you off."
"This is not fleeing, it is guiding you to the destination according to the plan. Misaka requests correction."
Misaka Sister turned her head and said seriously, a flash of electricity appearing on her body.
"Beep beep..."
The bomb under the white-haired man's foot instantly glowed red, and the next moment, an explosion erupted.]
[ .....]
~Projection of All Worlds~
"It seems the Railgun mass production plan hasn't stopped... This is the 9000th experiment. What's the purpose?"
"This white-haired man looks too scrawny. I feel like I could beat ten of them. Even if he's an esper, he wouldn't survive if he stepped on a bomb, right?"
Everyone watching this scene nodded in agreement. Although they didn't know what the white-haired man's ability was, espers' bodies were still normal human bodies, so they shouldn't be able to withstand the damage from an explosion.
And the explosion was right under his feet. It happened so fast, no matter how powerful his ability was, he shouldn't have had time to react.
This should have resolved it.
~The Disastrous Life of Saiki K. World~
"Yare yare, what kind of superpower is this?! Psychokinesis?!"
Saiki secretly speculated as he watched the white-haired man display his ability. If it were psychokinesis, then deflecting bullets back would make sense.
But he couldn't understand what this clone plan was for?! Since they were cloned, why did they seem to be deliberately made to fight the white-haired man? They should know they're no match for him; doing so would only be a pointless sacrifice...
~A Certain Magical Index World, Academy City~
"What?!"
Misaka Mikoto's hands instinctively clenched into fists when she saw this scene. She knew that such an attack would be ineffective, at least against the white-haired man...
"'Sisters' really exist!... Tsk! This can't go on."
Misaka Mikoto instinctively gritted her teeth, then turned and rushed out of the room. She had to find the white-haired man and get to the bottom of this.
"Onee-sama!!"
Kuroko had just stretched out her hand when Misaka Mikoto vanished.
Even Kamijou Touma couldn't help but want to find Misaka to understand the situation. In his opinion, this so-called experiment was practically the white-haired man's slaughter. If he could, he wanted to help stop this plan.
~Type-Moon World, Fifth Holy Grail War Worldline~
"It's no use... Misaka Sister is no match at all."
Shirou Emiya instinctively clenched his fists. As someone who wanted to be an ally of justice, he couldn't stand such meaningless slaughter.
"This should be the 'Strongest' from the title. Next, Kamijou Touma should appear,"
Archer said, a bit unsure. Since the title was about the battle between the weakest and the strongest, the strongest had now appeared.
Emiya Archer hoped that Kamijou Touma would appear at this moment. With his ability, as long as it was the first time he encountered someone, he should be able to catch them off guard, what's known as a "first-sight kill."
"Clones, huh..."
Rin Tohsaka, having grown up in a magus family, was relatively more rational.
She just hadn't expected the technology in that world to have advanced to such a degree.
If there were also clones here, wouldn't Shirou Emiya from the previous world not have to be a puppet?! He wouldn't even have to exhaust his family fortune...
Clearly, Rin was still resentful about all the books she had to trade for the puppet.
.....
["Target is unresponsive..." The heavily injured Misaka Sister was still kneeling on the ground.
"How disappointing."
The white-haired manappeared in front of her, completely unharmed, and mercilessly tore off one of Misaka Sister's legs, "Your prediction was completely wrong!"
But even so, Misaka Sister struggled to crawl forward until she picked up the Gekota badge Misaka Mikoto had given her.
Only then did she close her eyes, somewhat at peace.
On the other side, Misaka Mikoto recalled her conversation with her sister during the day, found the hidden clues within, and gave them to Uiharu to decrypt.
Then, Misaka Mikoto stared blankly at the message Uiharu sent her: "Absolute Ability User Project! The LV 6 evolution method using 'Sisters'.
Academy City only has seven LV 5s. According to the Tree Diagram's calculations, only one person can reach the unprecedented LV 6..."
"It would take 250 years to reach LV 6. We have temporarily suspended this plan and instead researched a method to promote ability growth through actual combat, manipulating the growth direction through a script. As long as 128 battlefields are prepared and 'Railgun' is killed 128 times, the subject can evolve to LV 6."
Seeing this, Misaka Mikoto, in disbelief, immediately rushed out of the phone booth and ran to the previous alley. Then she heard an explosion from behind her.
"Stop it!!!"
By the time Misaka Mikoto arrived, she saw the situation before her and let out a heart-wrenching scream.
But at this moment, Misaka Sister had already been heavily crushed by a shipping container, and blood continuously flowed from underneath it.
The white-haired man, with an indifferent attitude, said, "Today's experiment is over! This time it was quite exaggerated."
"Crackling!!!" Surging lightning struck near the white-haired man, but he deflected it and stopped.
"Argh!!!" Misaka Mikoto, completely broken by witnessing Misaka Sister's death, screamed and charged atthe white-haired man.]
[ .....]