As usual, expect OOC and wacky situations

#10

Mikoto clapped her hands together in front of her face and, for some reason, excellently averted her eyes from his. "Um. Ah, Judgment? Ah, yeah, that's it. That's what's going on, so when things like this happen, I get in a bunch of trouble. A bunch. Or maybe a crunch?"

She said all this in a fantastically fishy tone of voice.

"Hey, why does all this suddenly sound like a phone scam? The more you talk, the less information you're giving me."

"N-no, it isn't! I'm speaking distinctly and clearly, yeah, distincti-clearly!" Then Mikoto turned her eyes to her sister. "It's just that there's a lot I need to say. A lot. Hey, Sis, would you come over here a sec?"

"Huh? No, Misaka has her own schedule to keep, says—"

"Forget that." Mikoto stared her younger sister in the eyes. "Come over here."

Her oddly level voice weighed on Kamijou's mind for some reason.

It's not like Mikoto really did anything. She just looked at the face of her sister, smiled, and said one thing. But that one thing…An unknown whirlpool of emotion within it stuck right in his core.

Mikoto looked at him. The only thing there now was the face of a completely normal, if loud, middle school student.

"Well, we're heading down this way. You should be mindful of your curfew, too!"

She left behind Touma, still sitting on the bench, and wrapped an arm around her sister's shoulders. The absolutely identical pair of girls started walking down the wide road.

He slumped in his seat. Then, gazing at the blimp floating along in the night sky, he murmured, "Seems like they're about to do A Certain Scientific Railgun Side Story: Shopping Mall Demonstration?"

…

"Wait, what did I just say?! Not againnnn!"

#11

Being a lone student, sitting in the middle of a classroom soaked in the afternoon sunlight, conjured up sadness within him. At the beginning, Touma was making sarcastic remarks like, "Wow, I must be in some village elementary school where you can clearly see the country's declining population!" Unfortunately, and as he thought it would, the novelty had worn off after this had continued for three or four days. By the fifth and sixth, the only feelings left within him were those of tedium.

However, there were only two more days of makeup classes, including today. He wasn't too far from the desperate mood of "yeah, my vacation finally starts on August twenty-second!" But he was still happy he'd be liberated from this.

He looked at the podium directly in front of him.

There stood his female teacher, Komoe Tsukuyomi. She was 135 centimeters tall and at a glance looked only twelve years old; only her face was peeking above the podium. She was reading out of a textbook atop it. But wouldn't it be a lot easier to read if you held it in your hands? he pondered.

"Now for the requisites for the ESP Card trials reenacted in the United States in 1992. The materials for the card changed from vinyl resin to ABS resin. This was in response to a trick whereby rubbing finger grease, your fingerprints, onto the front of the card, you could make it so you couldn't tell what kind of card it was when it was flipped over— Wait, Kamijou, are you actually listening to me?"

"…Well, Miss Komoe, I'm listening and everything, but… Does this have anything to do with A Certain Scientific Railgun?"

"...I don't understand the question?"

"...DAMNNN ITTT!"

Touma cried out from the depths of his soul. These strange cryptic messages of his were getting out of hand!

Komoe was startled by his shout. "I'm sorry Kamijou! Just explain what you meant by your question!"

"Sorry… it wasn't your fault. Sometimes, it feels like my mouth has a mind of its own." Touma sighed. "I meant to ask about how this had anything to do with our powers."

"Oh… well, um… If you give up because you say you have no power, then you won't be able to make any progress!"

#12

The time was 6:40 PM. Touma was walking lazily through the shopping district under the evening light. He had missed getting on the last train, which was set up to be perfectly timed with the end of school. The last trains and buses in Academy City were generally at six thirty to prevent students staying out late in the town. The policy of putting all the means of transportation to sleep then was apparently to suppress kids going out at night.

I'm really getting pissed off by my mouth doing this. Seriously, what does it mean when I say "A Certain Scientific Railgun?" thought Kamijou as he headed back home in the sunset. It didn't look like the wind was blowing, but the propellers on the wind generators were spinning around and around.

"Hm?"

Then he spotted the back of someone he knew in the midst of the crowd of people. A brown-haired girl wearing Tokiwadai Middle School's summer uniform—it was Mikoto Misaka.

Well, hopefully this'll get my mind off what happened earlier. Besides, it's not like I have a reason to avoid her. Kamijou trotted a bit and came up alongside her.

"Heya. You just getting out of makeup classes, too?"

"Eh?" Mikoto responded in an unfeminine way. "Oh, it's you. I'm tired today, and I was going to preserve the strength I had left, so I'll let you off the hook with the buzzy stuff today. What did you need?"

"Well, I didn't really need anything…We're going the same way, so I just figured I wanted to go home with you."

"Is that right?" Her eyes narrowed just slightly. "You're telling a lady of Tokiwadai that you 'just figured you wanted to walk back home' with her? Hah, do you have any idea how many men have worked their asses off to stand where you are now?"

"…Man, this is A Certain Scientific-"

Slap. Touma covered his mouth to stop himself from speaking.

Misaka tilted her head in confusion. "Are you okay?"

Not again! Shut up mouth! Outloud, Touma waved her off. "Yeah, I just needed to shut myself up."

"...Huh. Can't say I was expecting that."

Touma sighed. "Anyways, is your little sister not with you? She helped carry all that juice back yesterday, so I was sort of thinking I'd like to thank her."

#13

Kamijou thought back to the girl he had met at the vending machine. She showed no embarrassment around strangers.

Could that really all have been an act to cover the truth?

Or was it some strange, actual intent? Did she want to cooperate with the experiment, then go on smiling even though she knew the Sisters were dying?

Neither of those things was the picture that Kamijou had in his head of Mikoto Misaka.

His false image would crumble to pieces as soon as he hit the intercom.

And then, he realized that at some point, he had become frightened of that fake vision breaking apart.

He didn't have a reason.

He probably just thought it had been nice to walk home with her.

"…"

Will you press it anyway? His fingers trembled. If he did, there would be no going back. He wouldn't be able to cancel it. After this, the facts that he was ignorant of would, without a doubt, surge into him like a roller-coaster car starting down a steep hill.

He didn't know what he should do.

Without knowing what to do, his fingers pressed the intercom.

He heard the click of plastic buttons being depressed.

Beep, went the speaker, opening a portal to an alien world.

"Ah, umm…"

He didn't know what he should say.

But he needed to say something.

"…This is A Certain Unknown Level 0. Grrk! I meant to say Kamijou! U-Um, is Misaka there?"

While waiting for a response, Touma berated himself. You stupid little mouth! I'm half tempted to rip you off!

"Huh? Is that you, Mr. Kamijou?"

#14

Her scared, hurt, and tattered whisper vanished into the night.

"Help me already…"

A cry, one that would never reach anyone, escaped her mouth, unable to endure it.

And then, she heard the meowing voice of a kitten.

Mikoto looked down. The cat's black fur, unlike the darkness, radiated gentle warmth, and it was sitting at her feet. It looked up at her and gave another mew like an innocent child.

Where on earth did this cat come from? she thought, when…

…she heard the clack of a footstep.

"…"

She brought her head up.

With only the light from the needle-thin crescent moon expressing the environment around her, on this iron bridge with no streetlights, on this night bursting with darkness…

"…So we stand here, at A Certain River Bridge."

That boy arrived, as if cutting his way through it.

He arrived like a hero, rushing to her side after hearing her shouts swallowed by the dark.

"...GOD DAMN IT! THAT'S NOT WHAT I WANTED TO SAYYYYYY!"

That illusion was broken very quickly by his next words.

"Stupid stupid mouth! I should really rip you off!" Touma angrily shouted at himself.

"...Pfft." Mikoto had to cover her mouth to hide her laughter. "W-What the heck was that?"

Touma glanced upwards, as if he suddenly remembered where he was. "Uh… I really don't wanna talk about it."

Whether he realized it or not, the misfortunate boy had broken the tense atmosphere that was surrounding Mikoto. However, that didn't mean her previous thoughts suddenly vanished.

"Well, I'll be heading off," Mikoto said with a wave, moving towards Touma. "See ya around."

The boy quickly realized that something was off. "...Stop it."

"Eh?" The girl stopped moving in her tracks. "Stop what, exactly?"

"I don't know what you plan on doing. But I know about Misaka Imouto, and the Sisters, and this 'experiment,' and Accelerator, so let's both cut the crap already."

#15

Right as Accelerator was about to kill Misaka Imouto, he jerked to a halt, having noticed something. He slowly craned his neck to look over his shoulder and behind him.

From Misaka Imouto's position face up on the ground, Accelerator's body acted as a wall blocking her view of whatever he was looking at. But Accelerator froze up. The entire experiment existed in order to elevate him from "strongest" to "invincible", but he seemed to have forgotten all about that.

"…Hey. What happens to the experiment now?" he asked abruptly, still unmoving.

Misaka Imouto felt that was an odd thing to ask the person he had been in the process of killing, but as time passed, Accelerator still did not move from that spot.

She crawled along the gravel and followed his gaze.

There, she saw a civilian—one who had no connection to the experiment.

There stood Touma Kamijou.

Accelerator did not know what the procedure was when a normal person entered the experiment. He looked like he didn't know what to do about the high school boy who had suddenly appeared.

"...It's you! You're A Certain Idol Accelerator-sama!"

"...Hah?" Of all of the sentences that Accelerator expected to hear out of his mouth, that was definitely not one of them. "What the hell did you just say?"

"...Crap, my stupid mouth did it again!"

The albino angirly glared at the boy. "First of all, that shit wasn't even grammatically correct, you dumbass! And second of all, are you trying to piss off one of the Level 5s in the city?! Are you stupid?!"

For a moment, Touma forgot why he was there. Then his eyes drifted to Misaka Imouto. And suddenly, his eyes darkened.

"You bastard… get away from her!"

#16

Kamijou brought his smashed-up body one step forward.

He felt like all his blood would turn to steam from the smallest of movements. He felt like his consciousness would run away from the most miniscule of thoughts.

In spite of that, he advanced.

Within such a haze, he didn't have a proper grasp of the situation. Why was all this violent wind blowing? Why had the plasma disappeared? By what logic had he survived? His mind was in such a desolate state that his mind had left such important things by the wayside.

But there was just one thing.

Directly in front of him, he saw Accelerator trying to kill Misaka Imouto.

He saw Mikoto step between them to act as her shield.

And that was all he needed to know.

That was more than enough reason for him to get up again.

"You're damn interesting…"

He heard Accelerator's voice.

"…You're the most interesting thing I've ever met, ya know that?!"

As he howled this into the night sky, he clenched a fist and dashed toward him with intent to kill. He closed the distance in the blink of an eye, like he was shot out of a cannon, using that power of his to change the direction of his feet's force as they kicked off the ground. Convenient, thought Touma. There was nothing better than for Accelerator to come to him. Given his battered body, he would probably have collapsed before getting to him.

Touma Kamijou had no strength.

The strength to stand on his feet and walk. The strength to form words with his tongue. The strength to have thoughts in his head. His body had not even the tiny amount of vitality required for any of these.

However, he gripped his right hand.

Into a fist.

And brought his eyes up.

Accelerator flew straight up to Touma Kamijou at the speed of a racing bullet.

His suffering right and his poisonous left.

Those hands of his, either of which would kill a man with just a touch, approached Kamijou's face.

For a moment, time seemed to stop.

Pouring all the power remaining in his body, which was as minute as strained lees, Kamijou swung his head down and ducked. The suffering right passed through empty space above him, and he batted away the follow-up from the poisonous left.

"Grit your teeth, 'strongest'…," said Kamijou to Accelerator, whose heart had frozen, his two-part killing blow nullified.

At super-close range, near enough to touch, he grinned like a savage beast.

"…Its Indexing Time!"

Then…

Touma Kamijou's right fist plowed into Accelerator's face.

His slender, pale body slammed down into the gravel, and he tumbled away with his arms and legs violently flailing.

"Heh… there goes my mouth again…" Touma mumbled out, before crashing to the ground himself.

#17

Touma laid in his hospital bed. Misaka Imouto and Index had just visited him after his fight with Accelerator.

He only regretted one thing from that fight, which was that he wasn't able to arrive sooner. But in the end, the experiments were halted. And that was the ultimate goal all along, right?

…There was something else though…

"What's going on with my mouth?" Touma spoke to himself. "Seriously, why does it just say things without me wanting it to? Is there A Certain Magical Index Side Story: A Certain Scientific Mental Out controlling my mind?!"

Blink.

"It just happened again! I can even feel the terrible grammar on that one! Screw you misfortune!"

And so, in the end, despite defeating the #1 ranked esper in the city, Touma felt like he had lost.

#18 (This is from Railgun S but I'm including it because lol)

Mikoto started punching the air. "He made me make homemade cookies, so if he doesn't take them, he'll pay-"

"Pay for what?"

Touma unexpectedly appeared before the girl. He was all bandaged up and in crutches.

"What are you doing here?!" Mikoto cried out, flustered.

"Huh?"

"Shouldn't you still be in the hospital?"

"Well, I can't keep piling up the hospital bills. And my roommate grows more violent with each day I'm away. Anyways, what are you doing here?"

Mikoto flinches, before looking down. "W-Well..."

"Were you coming to visit me again? Just kidding."

"Of... Of course not!"

"You don't have to be so harsh."

You idiot! Mikoto thought. "It... It wasn't just about visiting you... But you, uh... You really, uh... helped me a lot, so... So I, uh... Th... Th... Th... Th... anks..."

"Ants?" Touma zoomed into the ants crawling on the ground. "Oh, observing ants for homework? Well, summer vacation is practically over..."

No! And what am I, an elementary schooler?

"Sorry for holding you up. See you around, Biribiri!" Touma passed by the girl on the way back to his dorm.

Mikoto scratched her head, still very flustered. "Mikoto Misaka."

"Huh?" Touma looked back.

"That's my name. It's not 'Biribiri', it's Misaka Mikoto. Sheesh... The least you could do is remember my name. Though, you might not have the brainpower to do it."

Touma seemed to think about it, before lightly smiling. "See you around, A Certain- Misaka! Yes, I meant to say Misaka and nothing else!" He suddenly started panicking. "Crap crap, not my mouth again!"

But Mikoto heard none of it. Once "Misaka" came out of his mouth, she stopped listening. Lucky for Touma, as he was still shouting to himself.

"I should get surgery or something because this mouth is pissing me offffffffffff!"

And that's OT3. If you loved it, that's great! If you hated it, that's also great! You cannot escape the titles!

Took longer to write, but I did have more scenes. Touma continues to suffer greatly. Also, as you saw, I did two instances of not using a title. #14 was a bit weak, but nothing else worked. #17, on the other hand, was one I was waiting to use. I plan to use more of those eventually.

I don't have much else to say. So, uh, be excited for OT4?