At night, the 18th school district, the dormitory of the students of the long point on the computer school park.

Because the house rented by Yukikaze is still being renovated, I still have to live in a student dormitory recently. As a Level 5, Xuefeng's dormitory is two bedrooms, one living room and one bathroom, and Xuefeng should have had a roommate, but for some reason he never came.

So.

"Whisper... What are you doing? ”

Xue Feng had just come out of the bathroom after taking a shower, and planned to contact Kiyama Harusheng for a while, and find a time to meet tomorrow. Then, I slept beautifully, and I haven't slept well in the past few days.

Then he saw Misaka's soft voice lying on the living room test table, and finally emitting an incomprehensible muttering sound.

The main training of the long point is researchers, so there will be a laboratory table in the living room of each dormitory, and the society can do some basic experiments in the dormitory with not particularly strict requirements.

"Qingyin feels that this experimental table is very familiar~ I seem to have met it in the research institute."

Xue Feng thought about it with his head on his back, with the scientific research strength of the long point on the machine, there must be people who can participate in the evolutionary experiment of the absolutely capable.

But who is it? Yukikaze can't remember...

Thinking about it, Xue Feng felt that this matter would have to trouble Kihara Void.

"I'm sorry, I really can't get this, I only know that the person responsible for the Absolute Ability Evolution Experiment is Amai Ao. Aren't you a space manipulator, I know where the other party's experimental base is. ”

It's the first time I've seen Xue Feng, the researcher who instigated his only and most precious experimental subject to go to other research institutions to steal information...

"Also, it's time for you to study. I've found that a formula is the most suitable for your ability, and how to use it and understand it is still up to you. If you can understand this, maybe your abilities will go further. ”

Subsequently, Xuefeng received two documents. Titled "Imaginary Spaces and the Fourier Transform" and "The Second Law of Thermodynamics"...

A Fourier transform that represents a function that satisfies certain conditions as trigonometric functions (sine and/or cosine functions) or a linear combination of their integrals. In different fields of study, the Fourier transform has many different variant forms, such as continuous Fourier transform and discrete Fourier transform.

After the Fourier transformation of any function, it must also be divided into two parts according to the even function component and the odd function component.

Using the exponential representation of complex numbers e^iθ=cosθ+isinθ, the real part represents all the components of even functions (cosine functions) and the imaginary part represents all the components of odd functions (sine functions).

“......”

At the beginning, Xue Feng can understand every word, but together, what is this talking about?

"I need a top student..."

Among the top students I know, one party passes, forget this, it's easy to be killed. Mikoto Misaka, this is indeed a top student, but this thing Mikoto, a junior high school student, doesn't seem to be able to learn this thing.

The Misaka network is still forgotten, and he can't control it. And Kihara is virtual, he is a researcher who knows what kind of teaching.

Suddenly I thought of the chipboard military tyrant... This doesn't seem to be even better!

"Does Brother Xuefeng need help?"

Seeing that Xue Feng's whole person had turned gray, he tilted his head lightly.

"Can you read it?"

Yukikaze handed the phone to Misaka Qingyin, that is, with the mentality of giving it a try.

Five minutes, ten minutes, half an hour...

"Learned/end."

The overall consciousness of the Misaka network intervened, mobilizing the computing power of the Misaka network, coupled with the ability to understand the light voice of Misaka, and completely learned the knowledge that Xue Feng could understand for a lifetime in half an hour.

“......”

"Light sound can teach, but Brother Xuefeng needs a person with a similar spatial ability to help you understand."

Who else could there be? Only Kuroko can help him...

Yukikaze can imagine what kind of expression Kuroko will have when the time comes.

After a while, Yukikaze dialed Kiyama Harusheng's phone number from Kihara Imashi, and after discussing the meeting time, Misaka began to give Yukikaze a lesson...

This lesson, going directly from three o'clock in the afternoon to the second half of the night, Xue Feng's head is going to explode. Although he never passed high mathematics in college, Xue Feng still has a bit of a foundation in advanced mathematics. Otherwise, I would have fallen asleep a long time ago.

But now it's Misaka who is asleep...

"Alas... Good night, light tone. ”

After carrying the girl who fell asleep on the table back to the room,Snow Wind came to the balcony,Looking at the school city that fell into darkness.,Only sporadic lights.。

"Before I knew it, I had been here for four days. The school city without lights has a different kind of beauty.。 The snow wind will take good care of the ...... here."

Rumble!

In the direction of the seventh school district, a high school dormitory building was on fire, and the smoke could be seen through the snow and wind from afar, and gradually formed a mushroom cloud floating upward...

"Ahh

Shirai, Nosy, Snow Wind, is just about to go online. Xue Feng remembered that there was a sister Misaka in the house, and what if she was abducted by someone from the evolution experiment of the Absolute Ability at night.

"Forget it... Go to bed. ”

The next morning, Yukikaze opened his eyes and saw Misaka Whisper lying on top of him like an octopus...

At this time, Qingyin also opened his eyes and confirmed each other's eyes...

Question: Any real function can be written as the sum of an odd function and an even function if the definition domain allows. Is this true? ”

Xue Feng was disillusioned, and thought that the light voice would come with a sentence of Ernie sauce ~ oh hayo ~ to make him quickly excited, but when he asked like this, Xue Feng still wanted to continue sleeping...

"Wrong."

"This sentence is right, Qingyin tried to teach a lesson to Brother Xuefeng who forgot all his knowledge last night."

Bilibili~

The faint current of the light sound only made Xue Feng feel a little numb all over his body, and it was not so hot as it was... But all of a sudden, it startled Yukikaze.

"I'm going to see Kiyama Harusheng, I'll change your hairstyle after changing your clothes."

Hat, single ponytail. Dressed in a black Guata sports suit, coupled with a mediocre upper body, if you don't look closely, you will think that the current Misaka light sound is a very cute boy.

As for how to get Misaka's ponytail, Yukikaze has an extremely quick and convenient way. Put the headband on the vacuum cleaner, then turn it on to the minimum power and suck it on the back of the soft head, and then push the headband onto the hair... Perfect~

"Papaya... Musashino milk... I want to drink it in a light voice..."

Walking on the street like an older brother and a younger brother, Kazuki has a deep resentment towards her figure, and in her memory there is the image of Mirei Misaka. So... Where is all this inherited?

"You're young, you will. Also, did you get it wrong when you used electricity to burn fat? There's an old saying that thin people lose weight first..."

Duang！

The physical skills of the Misaka sisters are quite high, and it is easy to throw down the snow wind. At this time, Xuefeng was lying on the ground with his back facing the sky, and his heart was extremely calm...

Fortunately, I also wore a hat, and I was not recognized, so I would not be ashamed.

"Ah, isn't this Senior Shirai? Is this your junior? So cute! ”

Saten's tearful curious head appeared in front of Xuefeng's eyes.

"Sister smash, you recognized the wrong person."

Tearful, who was wearing a pink light summer dress, was stunned for a moment, and looked carefully at Xue Feng's eyes, one gold and one black, as if it wasn't him, but this was indeed Senior Shirai's voice.

looked at Misaka's soft voice with a calm face, and then at the snow wind on the ground, and tears blinked.

"I'm sorry, I recognized the wrong person."

Looking at the back of the tears leaving, Xuefeng breathed a sigh of relief.

At this time, Qingyin stretched out his hand and pulled Xuefeng's clothes.

"Qingyin will go back to the dormitory and wait for Brother Xuefeng, and come back on time at night." Light tones will be scary at night. Because every night, I will die several times. ”

"I'm afraid something will happen to you."

Xue Feng covered his waist and sat up, the over-the-shoulder fall just now was really hard...

"Because I will bring a lot of inconvenience to Brother Xuefeng in daily life, my sister doesn't know about it yet. It was decided after comprehensive consideration of the light tone. ”

Subsequently, Xuefeng bought a mobile phone for Misaka Qingyin, which stored several phones and two emergency contacts.

"The key to my dormitory, this is a mobile phone, I have several phone numbers stored in it, and I can call it in case of danger. Or press the power off button three times in a row. In less than five minutes, someone will arrive. ”

One of the two emergency contacts in the light phone is Xuefeng, and the other is the emergency contact in Xuefeng's phone.

An hour later, Yukikaze arrives at a hospital that has contained students who have fallen into a coma due to the Fantasy Mite.

Here, he met the person he wanted to meet, Haruo Kiyama.

"Mr. Kiyama, entrusted by Kihara Void and Reality, came to learn about the medical knowledge related to the brain."

In a consultation room, Yukikaze and Kiyama Haru sat facing each other.

"Oh... I see. ”

Kiyama Haruo's tone was flat, not kind, but not annoying.

"His request is for you to memorize the detailed division of the human cranial nerve, and you don't need to understand the back. and the functional area corresponding to the key parts. There are also things related to AIM's proliferation stance. It's not a lot, and if you have a strong memory, three days is fine. ”

Three hours later, Kiyama Haruo felt that the snow wind had almost reached its limit, and it was about to overflow if he continued to talk. That would not be worth the loss, so the class was announced.

"Mr. Kiyama, why don't you record a voice? This will save you a lot of time. ”

Haruo Kiyama was busy, and it could be seen from the dark circles under her eyes.

"I'm a teacher, and although I say that you should memorize by rote, I should try to make you understand as much as possible. If you have any questions, I won't be able to answer them for you in person. ”

"Thank you, Mr. Kiyama."

Xue Feng turned off the recording of his mobile phone, put away the brain structure map given by Harusheng Mushan, turned around and left the room.

Shortly after the snow wind is gone.

Haruo Kiyama thoughtfully tapped his fingers on the table, his eyes staring at Shirai Yukikaze's information.

"Eighth place? It's really a lack of brainpower... I thought he had something to do with Kihara, but it seems that I was thinking too much about it. ”

If you don't understand this knowledge, a junior high school student who has undergone ability development can memorize most of it in three hours, but if you are snowy, it is estimated that even one-fifth of it is enough to memorize it overnight...

When Xuefeng walked out of the hospital, he always felt that something was weird. It's as if someone is saying bad things about themselves... No matter, let's go find Kuroko first.

At the thought of asking someone three years younger than him to ask questions, Xue Feng was a little embarrassed.

"Where are you, old sister?"

"Work! Patrol! ”

Toot toot toot....

Xue Feng was a little embarrassed, and always felt that his road to asking for sunspots today was a bit bumpy? Forget it, ask the Discipline Commissioner...

"Moximoxi? Is the Discipline Commission a switchboard? I need help from the 177th branch of the Discipline Commissioner? I'm Shirai Yukikaze, and my sister is lost. ”

There are 177 branches of the Discipline Inspection Commission.

Hatsuharu yawned in his seat, then straightened the garland on his head in the mirror, and glanced at his hairline by the way, it's okay, it's normal...

Suddenly, the small shield icon in the lower left corner of the computer began to flash, which meant that there was a task, and it was a task from the switchboard.

"This...."

In the early spring, I clicked on the task and saw the content of the task inside, and my smile was slightly embarrassed...

[Searching for the Mission, Mission Objective: Shirai Kuroko, Task Publisher: Shirai Yukikaze, Task Description: Writing Kuroko is read as a pervert, I accidentally lost her, in order to prevent her from going out to harm people, please ask the members of the Discipline Committee to help find her traces.] Contact number: ***********]

"What's wrong with the early spring, is it a tricky task?"

Gufa Meiwei, who was watering the flowers, heard the laughter of the four dislikes in the early spring, and asked suspiciously.

"Ah, no, normal search mission. It was solved very quickly. ”

"Oh, by the way, in early spring, why did I have a little less water to water the flowers, did someone accidentally drink it?"

In the early spring, I continue to laugh awkwardly...

Is this the phone number of Senior Shirai? Write it down, maybe you'll need it later. After Hatsuharu wrote down Yukikaze's phone number, he dialed the other party's number.

"Hello Senior Shirai, this is the 177th branch of the Discipline Inspection Commission, I'm Hatsuharu Ornament, and your sister is on the east side of the abandoned building in the 10th School District. Remember to give a good review after the task is completed. ”

"Okay, thank you for the early spring."

Xue Feng on the other end of the phone hung up the phone, turned on the navigation, and floated directly to the sky, ready to walk straight over.

Along the way, I passed the airship that was used to broadcast news over the school city.,Seeing the flag towed behind the airship.,I came up with a wonderful solution for a while.。

That is, if you drag the spear of Yakong that is launched, will you be able to fly faster?

Just do it, can you still be killed by your own dignified space control?

[The map of Lack of Virtue continues to navigate for you.] You've overspeeded!! ]

At the same time, Kuroko dragged her tired body towards her destination, stayed up all night, and finally found the trading location of the fantasy master, but she had already missed several times in a row.

"Alas, really, my sister doesn't know what she's been busy with lately, and she's always absent-minded. My brother too, what kind of phone calls do you make at work. ”

Kuroko looked at the time, and at two o'clock in the afternoon, it was time to trade. Kuroko's figure disappeared in place in a flash.

Came to the outside of this abandoned building.

"I'm a member of the Discipline Commission!"

“......”

"Let go of the tears!"

At this time, the scene in front of Kuroko's eyes was like this, a big man with a height of two meters and a very uncoordinated arm and body was slamming Kuroko, and his strong body directly stepped on the wall.

Tears trembled in front of him, and then he was grabbed by the hair and lifted it directly.

"A guy who doesn't have any power doesn't have the right to be verbose and point fingers."

The other party didn't pay attention to the sunspot at all, and when the young man who looked a little chic was beside him, two young people who seemed to be under him stood up and attacked the sunspot directly.

"I'm a member of the Discipline Commission! I arrest you on charges of intentional injury! ”

Looking at the two people who rushed up, Kuroko came to a person in a spatial move, and with the power of his running, he fell over the shoulder and knocked him to the ground.

At this time, the sound of breaking the air sounded, and another young man used his ability, and the glass bottles, slabs and bricks, and old oil drums all smashed towards the sunspot as if they had eyes.

Mental power,This is one of the most used abilities in the school city,Many people will。 But very few of the high grades appear.

Boom~

Kuroko directly moved a brick that smashed at him, and released it on the young man's head.

"Is this the movement of space? It's a pretty good ability. ”

When the tall young man saw that his two younger brothers were out, he was not afraid or angry, but was a little interested. Letting go of the tears, he rushed straight to Kuroko.

"Before I gained the ability, I was very afraid of you members of the Discipline Commission."

Kuroko watched as the tall young man ran towards him with his arms outstretched like a gorilla. The heart is given for nothing, and the whole body is flawed.

It's just that the body is too strong, and you will suffer if you fight your own body. Let's move behind him and knock him out.

When the tall man was about to grab Kuroko, Kuroko moved directly behind him, but what caught Kuroko's eyes was an open space.

"What about people?"

Subconsciously turned around to defend, and the huge power of the tall man directly kicked Kuroko out several meters away. If it weren't for the briefcase in Kuroko's hand as a cushion, Kuroko's little arm would not be able to withstand such a large force.

"Competence?"

Kuroko believes in his eyes very much, the other party must be an ability, and the ability level may have reached Level 3, maybe it has something to do with space.

"I'm going to get all the humiliation that the Discipline Inspector gave me back from you!"

The tall young man rushed forward again.

It's time to write a report again... Kuroko's hand reached for his thigh and touched the steel nail tied to it, intending to move the steel nail directly into his body.

However, at the moment when the steel nail disappeared, the young man dodged strangely, which directly caused the black man's steel nail to miss.

Gotta figure it out! Kuroko felt that this young man was a little tricky.

Seeing that the young man was about to make a leg again, Kuroko decided to test it and defend himself with a briefcase, so that he could resist it!

The route is my face! Seeing the young man out of his legs, Kuroko put the briefcase in front of the side of his head. However, the foot that should have attacked his briefcase appeared directly on the side of his waist.

"Oops..."

If this kick is missed, the ribs may be broken directly!

Click, the sound of bones cracking...

With the young man's wail of pain, Kuroko looked to his side, where a black spike stood.

"Ernie sauce?"

Kuroko looked around, but he didn't see his brother. Then I looked up at the sky and saw that the snow wind was falling from the sky.

"I came just in time. My lovely sister, how can I thank my brother? ”

Xue Feng stretched out his hand and touched the melon seeds on Kuroko's head.

Kuroko, who was originally a little grateful, saw Xue Feng's unbeaten expression, and his face instantly dropped.

"Damn... I'm going to tear you up! ”

The young man stood up and took out a knife and threw it directly at Xue Feng.

"Brother!"

Xue Feng had his back to the young man, and he couldn't react at such a close distance.

With a whoosh, the spear of Yakong turned into a strip and stood in front of Xuefeng, and the flying knife passed by, directly breaking into two sections.

"Are you stupid for me? Isn't it good to be lenient in confession? The sin is added to the first degree. ”

Xue Feng turned his head, and his golden eyes looked at the tall young man.

Kindness?

In the world of the left eye, the position of the tall young man is not right, and the real and virtual images are inconsistent.

A virtual image is a virtual image seen by the left eye, and a real image is an image of the normal world. Generally speaking, there is only one type of image that can be seen in Yukikaze's left eye, and that is that the real image and the imaginary image are the same. But this youth is inconsistent.

"Kill you!"

The young man endured the sharp pain in his left foot and smashed his fist into Xue Feng.

"Brother hide! His attack is problematic! ”

At this time, in Xue Feng's eyes, the young man's attack was still divided into two, one was the real image that smashed into his stomach, and the other was the virtual image that smashed into his head.

The virtual image is real, because the real image seen by the human eye is not necessarily the real thing, and those vertical and horizontal lines in the world of Xuefeng's left eye can be regarded as countless spatial Cartesian coordinate systems, and each object has its own absolute and relative coordinates. Therefore, the images and things in his eyes, where they are, are where they are.

So

"Ineffective tricks."

A teleportation appeared in front of Xue Feng's head, and Kuroko's eyes widened, is his brother stupid? It's a stomach!

But in the next second, a fist appeared in another portal, and in Kuroko's eyes, the location of this portal appeared in the air on the side of the young man's body.

But.

With a click, the young man only felt that his jaw hurt and his teeth were broken.

At this time, Xue Feng saw the tears peeking here in the distance, and felt helpless.

"Although I don't know what methods you use to change your body shape, you still have to explain these to the members of the Discipline Inspection Committee."

Holding the spear of Akong against the young man's throat and letting Kuroko handcuff the man, Yukikaze came to Tear's side.

At this time, the tears were a little depressed, and I couldn't do anything. Without ability, there is no right to speak...

"It's 2:26 p.m., and we're more than ten hours until 12 o'clock in the morning? What is depressed? ”

Tears smiled bitterly, she knew that Xue Feng wanted to comfort her, but this emotional intelligence, she was convinced...

"Senior Shirai, aren't the tears useless, it's a Level0, and the early spring is stronger than me."

"What happened to Level0? There's a Level0 that saved my life. She can still fight Level5 for a short time. As long as there is backbone! You can do what you can't! ”

"She's today, hmm...."

Seeing that something was wrong, Xuefeng quickly covered his tearful mouth. In fact, Tears had long known that person was Xue Feng, and he was embarrassed to see Xue Feng, so he didn't debunk it. Now, that golden eye is even more sure that it is Xue Feng.

"Tears, I'll introduce you to you one day... Don't say it..."

The tears that were covered by the snow wind nodded, it was the first time she had seen such a humble Level5, and someone was put down on the road... Now I beg myself not to gossip... It's not real to think about.

However, Tears is starting to become interested in the Level0 mentioned in Yukikaze's mouth, who will it be? The personal pronoun that Senior Shirai said was "she", could it be that day in the seventh fog... Sister Flanda?

At this time, Kuroko handcuffed the three criminals guilty of intentional injury and came to Xuefeng's side.

"Tears are fine, but brother, do you have anything to do with me?"

It would be a matter if Yukikaze could find her, but Kuroko didn't want to get into the nitty-gritty. The main thing is that Xue Feng came in person after making a phone call, and he should have something to find him.

"Sister, can you be my brother's teacher for a while?"

"Clams?"

Kuroko and Tears both had stunned expressions.

"After all, your brother and I don't have enough brainpower. Some questions of competence I would like to ask my lovely sister. ”

"Lack of brainpower? Burst! ”

Kuroko was still puzzled for a moment, and then remembered that Yukikaze was a rough stone... And then I couldn't hold back all of a sudden...

"Okay, but Kuroko, I'm very strict. Brother, pick a place for the evening. I still have a job here. ”

Xue Feng thought about it, at night.

What about Misaka Light Tone, at this time of the night, Xue Feng doesn't dare to let Light Yin stay alone in the bedroom.

So, let her hide?

"Okay, my brother will take you to see the bedroom where you get on the plane at night~"