Misaka Mikoto and Misaka Yui #11.111 This scene was completely scraped from main story of Electric Princess, and I not sure if I reuse it in other work, but was still placed under extra content header, not moved to other file, so I shall implement it here.
...
Mikoto pursues a baddie (probably from the magical side) who is more than capable of mischief and extremely slippery to catch.
Since Anti-Skill is short on him and he lit a fire-match with this tsundere, igniting her wrath or will for fight. For now he was on the run from Railgun, which he recognized as an opponent he should avoid, or don't bother fight with her as if she was not his opponent but just a passerby he triggered. Therefore used the impetuous escape method. But since too competitive #3 was more than capable of taking part in an extremely fast chase, like a park-tour [3run/ freeRun/ obstacle course], he was panicking as he was unable to shake her from his tail.
At one point, he took it across a certain school yard, or more precisely, he flew into a covered gymnasium, as big as an airplane hangar (with similar roof supports in a semi-circular frame.) Actually, he almost broke the wall if it wasn't for the door that flew off its hinges.
.
Except that it was in this gym, that Misaka #11.111 -Yui was located, who joined this school as an experiment to see if users with the same abilities as Level-5 can get along, or its not a Level-five thing and they will clash anyway. There were people in this hall doing sports activities and body training. The brunette in gym clothes, immediately saw what it was about and called to the entire hall to avoid the suspect, urging everybody to evade, like jumping to the side.
In his desperation, this baddie thought to cause a ruckus and thus delay his pursuer, but Yui's quick intervention, simply made a passage corridor, that would only result in a loss of precious seconds for him in this race. But when his gaze fell on a face identical to his pursuer's, they gaze meet, and because she stand there without a hint of urgency glaring at him, he freak out of the possibility of her be on same capability as the one pursuing him.
She obviously jolted, scare jump, as she realize she can be attacked. But since she jumped away to safety, an idea sparked in him. This one was is not an elite student like the one pursuing him. He can use this connection against her. But instead of the possibility of kidnapping, he decided on an even more desperate move. As he ran down the hall he turned his attention to the hangar ceiling and then to the pursuer who just rolled into the gym like a large cavalry. He sacrificed precious seconds to jump towards the windows on the opposite side of the hangar. In doing so, he cast a spell that was like an air saber or wind slash and split open the upper part of the supporting structure of the hall. The ribcage, cut in half, immediately began to bend under its own weight, which it could no longer spread effectively across the entire structure. As the ribs swayed, the sky could even be seen through the widening hole. A threat of collapse was immediate.
Panic set in, and Railgun stopped with gritted teeth, abandoning the pursue, to deal with the roof, that was threatening to collapse on the students.
Of course, very reluctantly, she let the offender break the window and continue his escape.
Mikoto used her electro-magnetism to grab onto the massive roof, except that the skeleton and the roof itself weren't just metal and she needed time to get a good grip. Electric discharges and currentssparked from her all the way to hit the ceiling and directly into the entire hall. The imminent fall was averted, when the structure began to returning onto its original shape.
Whoever, she needed something to patch up the sliced ribs, and that's why she started looking around. Her gaze fell on the assembled metal gym equipment.
Yui watched Railgun and immediately understood what her sister was thinking about. She ran to the equipment and called her roommates to help her to deliver it. Together, they finally freed the metal from its place and Yui sent out an electric spark to draw Railgun's attention to herself.
Onee-sama noticed her sister, saw that free piece, and already reached for the given metal. She controlled him remotely with her electromagnetism and took him to the roof where she used him to crudely patch up one part of the cut.
As more items were needed for emergency securing of the roof, Yui and her team ran off to get more equipment. Similar to this group, some others also engaged in vandalism in order to save the roof of the gymnasium. Actually… they decided to lend a hand to the heroic act of saving the gym.
Piece by piece the hangar ribcage got patched and they finally saved that building from collapsing.
.
After this effort, Railgun dropped to her knees panting in exhaustion, clucking her tongue in displeasure at letting the bastard get away.
Yui ran to her sister and brought her a towel and a bottle of water. Mikoto only took one look at that dumb face expression as if looking into a mirror, before accepting the gesture and took a deep drink and wiped the sweat from her face.
Of course, almost immediately, a circle of students formed around the brown-haired girl, because at this very moment there was no doubt that famous Railgun was standing in front of them, and she even accepted a support from Yui, whose mantra to the question (What is her relationship with the legendary level-5?) had been answered repeatedly until now by: "It's just a coincidence, that I have the same face, same name, and same ability as Misaka Mikoto."
But what one wouldn't want: the red-haired teleport express hastily arrived in the hall with its iconic call: "One~~e sama."
At that moment, Mikoto hastily dripped that towel onto Yui's face, covering it. So the redhead didn't see who she was talking to.
Shirai, like a true herald, decided to land into middle of that circle next to her idol and immediately began to condescend to act like a barbed wire fence between the rose bush and the curious flock of ducks that wants bite, to taste the roses. Since (she? [Witch one of the trio?]), was asked about her relationship with Misaka… it was Kuroko who became a real sassy, as she allowed herself to be heard; that she is her idol, only true and destined love, etc...
Right away, Shirai face and cheeks were deformed by her current blushing roommate. Railgun pointed out the fact that she is not a lesbian, and she dealing with a complete pervert who self-invited herself to her room. And against whom she must be constantly on the lookout, because this kōhai always trying to exploit the situation. Immediately, she demanded from the teleporter that they continue their pursuit.
To that, the Judgement member argued that the Anti-Skill had already prepared adequate tactics to catch the perpetrator and engagement from #3 would do more harm than good. At the same time, she very much pointed to the fact that it was her own impetuousness that forced him to take desperate measures. And Shirai glanced at the patched roof.
Except that the Railgun was sure that the baddie is not a normal thug and the Anti-Skill might not be enough to catch him. That is why she demanded that she personally supervise his capture and unless she will be ensure that she is needed in that arrest; she will be on watch. She didn't have time to argue any further and ordered Kuroko to continue chasing after him, saying that they (especially her) could lead him into an arrest trap.
.
Before the two teleported away, Mikoto wished those present good luck, emphasizing on her friendly big sis attitude.
They teleported away immediately, and everybody saw the teleport express fly onto the distance.
Still with a towel over her head and face, Yui waved (bay-bay) after her big sister. She then took off the towel and looked at the small gecko figurine that Mikoto had slipped into her hands when Shirai wasn't looking. Slipping that toy on her finger to get a better look, she sighed deeply. "Onee-sama, you still have terrible taste in choosing gifts. Misaka sighs, saying that you could choose something less childish." Of course, she earned the attention of the surrounding crowd. When asked if she and Mikoto were sisters, she started with "Oh..." and then everyone, together with her, chanted her mantra: "It's just a coincidence that I have the same face, same name, and same abilities; as Misaka Mikoto."
.
Notes: Misaka 11.111 appears as the protagonist of the story "A Certain Droll Hivemind" (EN) by EarthScorpion.