Temperature Control in Academy City

"It looks like the train is actually moving."

Affected by the wind and waves, Chuchun couldn't help but take a few steps back, his eyes drawn to the front of the car.

Following Hatsuharu's line of sight, Natsume-san had stood on the front of the car without anyone noticing, and was waving his hands towards the ground.

Less than an hour after the Anbu missile was launched, all preparations were almost completed.

The railgun shells are in place, the railgun is in place, and the humanoid transport is in place.

With a determined (dull) look on her face, Natsume Sonoko was sitting on the white preparation seat taking her final rest.

Under the sun, the clothes that were deliberately wet slowly dried over time. It turned out that Natsume's action was meaningless.

Although there was no strange smell and it still smelled nice, Natsume still felt uncomfortable all over and planned to take a good bath after finishing the work.

Thinking about some unimportant things, Natsume Sonoko turned her head and looked at the people who were still busy.

They are the seniors who are married.

"After marriage, the expenses this time will be borne by the Discipline Committee. We will transfer the funds you paid to your card later."

Not far away, Senior Sister Gufa was chatting with Senior Sister Houmei, and Senior Sister Houmei didn’t seem to care too much.

"No need. I will be very satisfied if I can do something for everyone."

After marriage, the senior schoolmate showed a bit of the dignity of a lady from a noble family. She raised her head slightly and covered her face with the open folding fan.

"Natsume-san, this is for you."

Someone patted her shoulder. Natsume Sonoko, who was listening to other people's conversation, suddenly came to her senses and found that Misaka-senpai had come near her.

"Nori rice balls?"

Natsume-san reached out his hand to take it, then asked in confusion.

"Saten-san bought it. It can help you replenish your energy. After all, Natsume-san will be working very hard later."

Misaka-senpai had a calm expression but a hint of a smile on her lips, and sat on the cleaning robot just like Natsume-san.

At this time, the others were either cleaning up the debris on the railgun's 'shells' or contacting Academy City officials. The two of them were the most free, and their only task was to have a good rest.

"It's okay. Everyone thinks it will be very hard for me, but actually it's not that tiring."

The relevant formulas have been simplified many times and have reached a level of ease. To achieve a similar effect, Natsume needs to consume much less computing power than a person with the same ability in the same system.

Natsume tore open the biodegradable plastic film wrapped around the seaweed rice ball and took a big bite.

It's not time for dinner yet, so I'll just treat it as a snack. When it comes to eating, Natsume is never behind others.

The light taste of seaweed and the fragrance of rice filled my mouth, and I also ate a shrimp in it. The simple taste always makes people feel happy.

Although it's not her favorite dessert, it tastes pretty good. Natsume gave the rice ball a score of six out of ten.

A girl with a bun-like hair was about to finish her rice ball when Misaka-senpai's phone suddenly vibrated.

"The missile's trajectory has been calculated."

Clenching her fists, Misaka-senpai couldn't help but feel excited.

"Is it 'sisters'?"

Natsume-san had his mouth full of rice balls and was chewing while hesitatingly speaking.

If Misaka-senpai can find some high-performance computer, it will most likely be with the help of the 'sisters'.

"Yes, this time it's all thanks to them."

Misaka-senpai nodded and said.

"Now that we know the orbital position, Natsume-san, we should prepare to set off."

Misaka-senpai took a deep breath and jumped off the robot.

"Hey, wait a moment."

Natsume Sonoko said this while biting a rice ball and almost choked because she spoke too quickly.

After a while, he threw the plastic film in his hand into the belly of the cleaning robot, and Natsume Sonoko hurriedly followed it.

...

No safety seats, no oxygen masks.

Natsume Sonoko and Misaka-senpai stood carelessly on the train head, looking at the ground gradually getting farther and farther away from them, until the people and the scenery turned into black dots.

The ambient temperature becomes lower and lower as the altitude increases, and the air becomes thinner. Even people's skin cannot help but bulge slightly because the pressure around them has become very small.

However, a certain ace pilot was already familiar with the process. The invisible air barrier not only protected them from being disturbed by external air currents, but also solved these problems as well.

If there were no urgent matters, it would really be like a spontaneous trip.

The locomotive passed through the clouds, like a sharp sword piercing the sky, with thick clouds all around it.

Woo woo woo.

From time to time, the sound of a whistle would be heard, and Natsume and the others were moving quickly in the air.

The locomotive, which was originally used as an amusement facility, probably never imagined that it would one day be able to fly into the sky.

A huge airflow was gushing out from behind the locomotive, and the scenery around it was moving rapidly towards the back.

Ordinary updrafts cannot provide much power, so this time Natsume used the legendary jet flight.

The engines of ordinary jet aircraft collect the gases produced when the fuel is burned, and then use the reaction force of the gases under high-speed injection to provide power.

Natsume, on the other hand, used his ability to achieve an engine-like effect.

Jet flight has great prospects, and there are many aircraft in the world that use this method to reach supersonic speeds.

But it is obvious that Natsume cannot reach that level yet. In addition, the weight of the locomotive is not light, and the current speed cannot even reach the high subsonic speed, which is 0.8 to 0.9 times the speed of sound.

But even so, Natsume's speed is maintained at 200 meters per second, and it is expected to reach an altitude of meters in about three minutes.

In order to maintain this high speed, Natsume also consumed a lot of energy and his breathing became a little rapid.

The locomotive broke through the thick clouds and rushed into the stratosphere. It seemed as if the sky suddenly became clear and the originally white scene finally became clear and clean.

The clouds around us became thinner and thinner, the view became wider and wider, and the sky finally turned into a deep blue.

There is basically not much oxygen here, but fortunately Natsume still has a few cubic meters of oxygen stockpile.

Chapter 227 Explosion

As the altitude increases, everything here becomes unfamiliar, as if we have arrived in a new world.

Because the surrounding environment is constantly changing, in order to adapt to this change, even Natsume's flight formula has to make some necessary adjustments.

This is the first time that Natsume has broken through the troposphere on the surface and reached the stratosphere at least 10,000 meters above the surface. The biggest change is that the air here has begun to become very thin.

There was a slight bumpy ride while adjusting the formula, and the speed dropped sharply, until Natsume-san expanded the efficiency and range of gas extraction, and finally managed to maintain the previous speed.

Climbing upward along the calculated missile trajectory, the white clouds around us have disappeared.

When it was about to reach an altitude of 30,000 meters, all that was left was the misty light blue gas mass that could be seen everywhere.

"It turns out it's already this high. This is the first time I've seen the ozone layer so close."

Feeling inexplicably curious, Natsume Sonoko tilted her head and looked at Misaka-senpai who was also curious.

Thinking of the unpleasant smell of ozone that is similar to the smell of fish, Natsume couldn't help but twist his nose.

In order to prevent these gases from mixing with the oxygen he breathed and causing unnecessary trouble, Natsume hurriedly separated the two and kept them clearly separated.

From this perspective, the locomotive's surroundings are suddenly coated with a thin layer of light blue, making it even more magical.

"Come to think of it, Natsume-san, you don't seem to be that worried."

After finding a comfortable seat, Misaka-senpai leaned back against the train with her hands.

As if influenced by Natsume-san's overly calm attitude, Misaka-san also began to relax.

"Because I have great faith in Misaka-senpai, there will definitely be no problem with precision strikes."

With a beautiful smile on her face, Natsume Sonoko blinked and said.

Natsume-san is also full of confidence in the third place in Academy City.

Without the constraints of the dense air on the surface, the current railgun can fire very far.

"Is that so?"

Misaka-senpai was slightly stunned, then suddenly started laughing.

"I heard from Kuroko that Natsume-san doesn't take the school bus anymore recently."

"Well, everyone is too enthusiastic. I'm a little uncomfortable with it."

"Indeed, everyone's enthusiasm can be quite disturbing sometimes." Senior Misaka couldn't help but sigh.

At an altitude of tens of thousands of meters, two inexplicable guys started chatting casually.

However, this conversation came to an abrupt end after a few dozen seconds. As the altitude continued to rise, the humanoid transport vehicle finally arrived at the designated location carrying the railgun suit.

As an excellent tool man, Natsume accurately sent the railgun into the designated position.

About 30,000 meters above Academy City, the two girls on the locomotive stood up in tacit understanding.

Looking far away, there is a light that is getting brighter and brighter, which cannot be seen by people with average eyesight.

"We are about to enter the scheduled attack range."

"Natsume-san, it's better to stay a little further away." Senior Misaka said sternly.

Electric sparks appeared on the brown hair, and after a while, the body seemed to be wearing a blue energy coat.

Misaka-senpai's entire body was filled with countless electric charges, and the strong electric current instantly spread across the surface of the locomotive.

"I understand."

Natsume nodded slightly, and at the moment when Misaka-senpai generated electricity, he controlled his body to move away from the surface of the electrified shell.

She is not Misaka-senpai, and it will still hurt if she gets electrocuted.

At this time, the air barrier originally covering the surface was split into two, protecting the two people well under such extreme external environment.

The little leather shoes flew downwards in the air for a while, and Natsume Sonoko stopped immediately.

Natsume finally stopped at a distance of about thirty meters from Misaka-senpai, where he could still feel the increasingly alarming current.

If that electric current were released in an instant, in certain special locations, it would be enough to cause a power outage throughout the entire Academy City.

It seemed that it was still not enough, so he created a large pseudo-vacuum protective layer in front of him. Only then did Natsume feel a little relieved.

When Misaka-senpai gives her all, we really have to take her seriously.

Staring at the calm air, Natsume-san began to focus all his attention on Misaka-senpai, quietly waiting for Misaka-senpai's next move.

As the electric current began to hiss, the surface of the locomotive began to vibrate slightly, and the originally slightly hollow trunk of the locomotive gradually sank.

The upward inertia of the locomotive had not stopped yet, but it suddenly stopped in the air, as if it was pulled by some force.

At this time, Misaka-senpai's figure also disappeared from the roof of the car, and when she came to her senses, she had already fallen right behind the front of the car.

Electromagnetic acceleration of artillery shells constantly corrects the trajectory of their landing point.

It's no different than what you do every day.

Misaka-senpai raised her right palm slightly, forming a wide electromagnetic field centered on her body, placing the entire locomotive inside the electromagnetic field and accelerating it continuously.

When the initial velocity was increased to three times the speed of sound, the fist full of electric current suddenly hit the body of the shell.

The high speed of the railgun immediately caused a burst of gas turbulence, and the sound of a sonic boom resounded through the sky.

As the shell moved through the air at an increasingly astonishing speed, it began to emit dazzling flames and countless sparks splashed behind it.

The railgun is still rubbing against the gas. Perhaps only outer space can allow it to travel unhindered.

However, the air resistance at this moment is much smaller than that on the ground, and the loss of shells gradually decreases with the increase in altitude. In just a few seconds, the speed of the super-electromagnetic gun has been increased to a whole new level.

Just before the damage to the railgun reached a critical point, it collided with a missile that was moving along its predetermined trajectory.

The scorching heat swept across nearly 100 cubic meters of airspace at the moment of collision, causing an explosion of considerable scale.

The dazzling flames lit up the sky, and in a corner of Academy City one could even see the clouds dyed red, and then there was a rumbling sound that resounded through the sky.