In the otherwise quiet student dormitory, the sound of high-speed keystrokes is constantly echoing.

"That, Harumami-san?"

Hatsuharu unexpectedly looked at his new roommate who was typing on the keyboard, and was really surprised.

"Sorry, please give me some time. My mind isn't as good as that of the dome, and if I don't write down any ideas as soon as I still have memories, there's no way I'll be able to retrieve them on my own. ”

It was as if a non-existent cloud had risen in front of him, and suddenly it made Hatsuharu feel a little strange.

But really, it's true that I've only just met this new roommate. I don't really know what Harukami looks like. It's just very instinctive, I feel that there is some serious sense of disobedience in the image.

"What is this? Ah, take the liberty of asking, if there's something inconvenient for me to know, then it's better if I haven't asked. ”

Gakuen City is also an academic organization.,Like all academic research institutions.,It's always been quite taboo to inquire into other people's research topics.。 But Harukami shook his head unconcernedly.

"Nothing." "It's not a topic that needs to be kept secret, it's just some of my thoughts on the quadratic mechanism." ”

"Secondary mechanism?"

"It's my own term, not a strict term. It comes from a small extension with secondary radar in air traffic control. ”

"Secondary radar? What is that? ”

"It's the little radar at the top of the airport radar. To put it simply, basic radar is a process that emits radar waves and receives the reflected radar waves. It is the most traditional kind of radar, but the limitations are also obvious. First, it has a relatively close detection range, and secondly, the information it can provide is always limited. The principle of secondary radar is to send out a signal, which itself transmits only a very small bit, and this bit is a switch. Once the equipment on the aircraft receives this signal, it activates a mechanism to send instant information from the aircraft. Since it does not have a reflection process, the distance is much farther than the basic radar. At the same time, it receives information from the aircraft, so it is far more detailed than a radar. I thought maybe this mechanic could work for me as well. ”

"Harukami-san's ...... Body? ”

"Hmm. My ability is psychics. If I can activate the ability to a specific object by sending a specific message, so that the other party can give a detailed feedback, I can know a lot of things. And ......"

"And?"

So far, Hatsuharu has been able to understand the meaning of Harajo. It just sounds like it's more than that.

"Hmm." Harukami shook his head, "Maybe it's just that I'm thinking too much." However, theoretically, as long as the system can be effectively activated, the teleportation mechanism can be activated arbitrarily. When this secondary mechanism is established, it is possible to arbitrarily carry out unlimited teleportation at both ends. ”

It sounds like something out of science fiction.

"Is that possible?"

"Although it was only my own idea, the theory did not prevent this from happening. To explain this, we have to start with quantum entanglement. In quantum mechanics, the two ends of the separate information carrier must still be regarded as a whole, and the observation of one end must affect the other end, so this system can achieve similar over-distance transmission of information. It's just that the limitation of the theory of relativity makes it impossible to exceed the speed of light as part of the information itself, so the upper limit of the speed of this system is the speed of light, so it is not a real distance effect. Broadly speaking, though, anything can be considered information, and that's important enough. Because electricity, light, stones, water, animals and plants, and even human beings themselves are all contained in this concept. Although humans differ from airplanes and do not have transmitters installed in response to secondary radars, humans themselves are unusual enough. Humans are even exuding information themselves, and that information itself is a feedback to the outside world. It's not just the ability to take a position on the AIM diffusion, body temperature, smell, electromagnetic field, and so on. It's like applying color to a blank piece of paper, creating a recognizable message in a wider field. If the feedback of this information is controllable, and can be influenced by a simple bit from the other end, it can be seen as control—or more appropriately, learned—of how the other end is measured. In other words, human beings are inherently equipped with the ability to respond to secondary mechanisms. In this way, the problem is that a signal that can trigger the secondary mechanism can be sent from this end, and the associated channel can be established from the starting point of the secondary mechanism, and the transmission mode of the entangled state is also possible. ”

"Oh, I've heard of it." Scott, pass me over. 'That's it, right? (Note: Neta from Star Trek)

"It's not...... It's pretty much the same in principle, but that's not what I was trying to achieve. Harugami paused slightly, "My intention was just to open this passage from a specific object. ”

"Ah, is that meant Kaihara-senpai?"

It's hard to deny that the inspiration came from her, but that's not the purpose. I don't want a special super-common sense information channel, although maybe like you said, it can achieve a lot of things close to that classic American drama. But no, all I want is the simplest and most common way to copy information from a distance. Well, I'm talking about the most ordinary kind, the most ordinary kind that can be understood at a glance......"

It was only after saying this that Harukami suddenly noticed that something was wrong with his focus. She noticed that Hatsuharu was staring at her with a rather peculiar gaze.

"That...... What's wrong? ”

"No, it's not." Hatsuharu scratched the back of his head, "I just think that Harumami-san really deserves to be a friend of Senior Sister Kaihara." ”

Her words made Harugami stunned for a moment.

"Not really...... That's not true. ”

For some reason, Harukami kept whispering in a voice that only she could hear.

"People have only two choices. Either live the life he is choosing, and face it. Either turn your back on it until you find it, or you die. In any case, it is impossible for one person to be someone else'......"

_

"Now, let's move the perspective."

In the kitchen, where there was no one but herself, Mrs. Kaihara held up her fingers.

“——”

It's a pity that, of course, no one in the kitchen will respond to her.

“……”

The strange silence didn't seem to restrain her movements, and the lady, who seemed to be playing herself, pulled out a golden teaspoon from a teacup cabinet placed in the corner of the kitchen. Then she walked over to the kitchen's most incongruous kitchen utensils — an oven that seemed to be more than a few decades old.

In front of this oven, she tapped the edge lightly with the teaspoon in her hand.

“……”

Still taken for granted, there was no response.

Pursing her lips, the corners of the lady's mouth hung on a rainbow version of the bright and moving smile that appeared in the rain. She flipped the teaspoon in her hand and continued tapping on the edge of the oven. The sound of the collision was almost continuous, and it lasted for more than 5 minutes.

"Oh no! Don't do that. Ma'am, this is so unladylike. ”

Finally, from nothing, a voice of response came.

"If you respond to me at the first time, I won't be too lazy to make any effort. Is it still so troublesome to make your secondary mechanism work? Maybe it's your usual preference to keep a lady waiting? Mr. Noft, Mr. Reper. ”

"That's because you're always bothering us about frivolous trifles, and you should reflect on yourself, ma'am."

Gradually, two men emerged in the kitchen. Although it's strange to say this in the school city,,But these two men look like two illusory ghosts.。

"It's a pity. Tonight I've decided to keep teaching me over and over again. ”

The young lady shrugged her shoulders, raised one eye, and threw the teaspoon in her hand at a few black teacups placed at the other end of the kitchen. The teaspoon drew a precise parabola and fell into the cup more delicately than expected.

"General Holland is really unlucky."

The other of the two ghostly figures sighed contrivedly.

"I'm thinking too much. The secondary mechanism only responds to a specific message, and as long as I don't call him, he won't be here, even if the 'cloud' of information itself is ubiquitous. Just like observing an electron, not observing it is just a wave of chance. Now, I call to you. ”

Mrs. Kaihara looked indifferent.

"It seems that we have no choice. So madam, what do we need to do this time. ”

"It's your old job, the only difference is that you change from the air to the ground."

The "ghost" who was the first to answer gasped, as if deeply stung by this simple joke.

Even Mrs. Kaihara showed a slight apology after saying this casually.

"I'm sorry, I lost my words."

"No, ma'am. You didn't say anything wrong. Since it is a mistake we have made, it is natural that we should bear it. Unfortunately, even we don't know why. No matter how you think about it, we are already characters who do not exist in this world. ”

The other of the two figures replied.

"Okay, I said that I lost my words, and I am not allowed to refute it." Mrs. Kaihara interrupted him with a wave of her hand, "You exist in the memory of the world, you should guess it. 'He dreamed of the world, she dreamed of the world'. Didn't you respond to a particular email before me? It seems that there has been a lot of noise in the aviation industry. So what does it matter? ”

“…… Thank you very much, ma'am. ”

"Anyway, this time I want you to be the driver for a while, and be responsible for picking up my daughter."

"Wait, lady. The captain and I did drive, but we didn't have a driver's license from this country in this era. ”

"It's good to ignore such trivial things. Well, a little attention, the country is the same as the UK where vehicles drive left. ”

"Hey!"

"The so-called driver is just a name. I need you as transponders for secondary radar now, that's all. ”

"I see, we get it."

"Note one thing, I don't need you to respond to my signals. What you need to respond to is a signal from another source. The two of you, who are already part of the information 'cloud', should be able to do that, right? ”

"What do you mean ......"

"Well, yes. As you guys think. Mrs. Kaihara said with a smile. I hope you will be on the side of that launch point when necessary. Just as you are here now in response to my call from the 'cloud' of information. You don't need to do anything, you just need to be there, and don't do anything else. ”

The two enigmatic figures stooped down and made a supreme salute to the noble but mischievous lady.

"As you wish, 'Lady of the Night'."

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PS: I believe that many people already know about my father's situation. As a word of caution, surgery is currently scheduled for next Monday. You shouldn't have to worry too much.