After a series of laughter that seemed to be the murmuring of a stream, and like a silver bell in the wind, everyone began to huddle again, circulating Qixi's mobile phone.

Then there was another burst of laughter that was trying to suppress it, gently shallow, knocking on the heart.

And Nanqin Li, who was also smiling gregariously in it, suddenly found that the mobile phone that was casually placed in his pocket after taking a look at it before vibrated a little.

She took it out and glanced at it, it was a LINE message from Mahime.

"I have something I want to talk to you about, and we will meet at the entrance of the station when we disband."

Nanqin Li quietly glanced at Mahime, who was sitting not far away, pursed her lips and thought for a moment, and replied "Okay".

What could it be?

With this question swirling in her mind, Nanqin Li added a new topic of girls.

……

At the same time, Pyeongtaek home.

The girl, who is always lazy at home, is now half buried in the kotatsu, and on the table is a plate of stacked oranges, as well as an open workbook and scratch paper.

Yui Hirasawa yawned as he tried to return his attention to the black and white words in front of him. However, the next moment, her eyes and thoughts involuntarily diverged - her sister was busy in the kitchen, humming a light song in her mouth; There was no sound from the entrance, indicating that Ryu and Mio had not yet arrived; The guitar in the upstairs bedroom hadn't been taken out for almost two weeks, and I didn't know when the next time I touched it......

Time passed quickly in the flurry of thoughts, and after suddenly coming back to his senses, Yui Hirasawa squeezed his cheeks hard with both hands, his expression became serious, and he began to solve the problem seriously.

…… That's how it should be.

"Ding-dong ——!"

"Excuse me~~"

The doorbell and greeting from the entrance made Hirasawa stand up from the kotatsu with a sigh, and after saying "I'll open the door" to his sister, he immediately ran to the entrance.

When she opened the door, she naturally saw her three friends.

Tanai Nakaritsu said that it was so cold, and walked in first; Mio Akiyama smiled at Yui Hirasawa and repeated the phrase "excuse me"; Qin Fu raised the carton in his hand and began to say hello with a smile.

After all four of them sat down in the kotatsu, and all of them had hot tea, coarse snacks, and the cake that Qin Fuki had just brought in front of them. After the rising heat, several people showed comfortable and satisfied expressions.

After taking a bite of the cake, Tanai Nakaritsu glanced at the workbook spread out by Yui Hirasawa, and suddenly said "wow": "Xiao Yui, haven't you basically done it yet?" No problem, right? ”

"Huh...... Hehe......" Yui Hirasawa scratched his head and explained vaguely, "I always felt that I couldn't calm down before, thinking about why you hadn't come yet, and then I started thinking about whether 'Jita' would be lonely now." ”

Tanai Nakaritsu instantly showed an empathetic expression, holding Yui Hirazawa's hand while nodding his head non-stop, while saying "I understand" and "I understand" in his mouth.

The corners of Akiyama's mouth tugged, and a hand knife slashed at Ritsu Tanaka, and said angrily: "Ritsu, you guy!" Don't forget what we're here for! ”

"Hehe~" Qin Fuki looked at this scene, pursed her lips and smiled, without showing her teeth, "I think this feels good now." ”

"No, no, no." Mio Akiyama shook her head, ignoring the other party's resistance, and kept dropping her knife, "It's all this time now, and it's starting to slack off, so it looks weird, right?" ”

It's late December, and it's very close to the national exam in January next year.

As juniors in high school, their graduation aspirations are naturally to go on to higher education, and they are also at the same university. That's why they get together now to review and read, and even the "HTT" performance has not continued since this summer. While they were sorry for the kid who had a good relationship with them and joined later, at least until the exams in January, the group didn't have the time to continue playing in the band.

Even the name "HTT" is already quite famous on the Internet and in Tokyo.

Hirasawa watched the scene with a smile, she thought for a moment and didn't continue to stay in the living room to disturb them. Instead, he picked up the vacuum cleaner and went to the second floor to start disturbing the room.

The hum of the power being turned up to the lowest level came from upstairs, and Tanai Nakaritsu stopped the confrontation with Mio Akiyama, stared at Yui Hirazawa, and suddenly said with a little deflated: "It's so good, I also want to worry about such a sister!" ”

"Eh, hey~" Yui Hirasawa laughed, with her unique naivety and stupidity, but the next moment, that naivety and stupidity turned into vigilance, "Xiao Wei is my sister, I won't give it to Xiao Yu!" ”

Hearing this, Ritsu Tian Naka scolded with a smile: "I can't grab it either, right?" You idiot! ”

Hirasawa Yui nodded, glanced at Mio Akiyama and Kotobuki again, and said, "I won't give it to Mio and Kotobuki either!" ”

Mio Akiyama pressed her forehead, with an exhausted expression: "...... Give me enough time! Read the book and do the question! ”

"Hehe~~"

Still smiling, she watched the scene as she turned the pages of the exercises that had unconsciously filled in the answers.

"Ah, how cunning you are! I'm going to start working on the questions too! ”

"Even Xiao Wei ——! I can't be left behind either! ”

In the midst of Mio Akiyama's dumbfounded pale expression, the stupid duo in "HTT", who have been hovering on the edge of the passing mark and the average score all year round, began to brush up on the questions with great motivation.

All in all, today is also a day full of "HTT" style and ordinary test preparation days.

Here, let us sincerely wish them to be admitted to their dream university.

……

At four o'clock in the afternoon, Jiang Yu was at home.

"Hmm......"

Wearing a velvet and thickened hamster cloak, with her legs folded together in the kotatsu, and a beautiful and silky long linen hair pouring down naturally, the girl was wrinkling her eyebrows and staring at a question in a daze.

On the scratch paper on the side, there is a neat and half-written proof process, and there are small black ink dots next to each step, which seem to be traces left by continuous verification.

"Hmmm......"

With an onion knight-like, meaningless muttering of thought came out of his mouth, Xiao Bury re-sorted out what he had just thought - hypothetical, no problem; The previous derivation process should be fine; So, what went wrong from this step? No, it's not that it's wrong, it's that it's too cumbersome, and my mind starts to get confused and can't sort out logic.

After understanding what his problem was, Xiao Bury got up and ran to Jiang Yu's room, knocking on the door and shouting: "Brother ~ Brother ~ Help me read a question~!" ”

After a while, footsteps sounded, and a neatly dressed Jiang Yu appeared behind the open door, and he yawned while saying, "What's the problem this time?" ”

Xiao Bury glared at his brother dissatisfied, and suddenly said, "Ah, brother, you have so heavy dark circles under your eyes, Sister Hui will talk about you again later." ”

Jiang Yu was stunned for a moment when he heard this, and subconsciously retorted: "Huh? How could it be! She's obviously ...... these days."

"Oh~~" Xiao Bury uttered a meaningful tone, "'She's been ...... these days'?" Can you tell my sister what is clear? ”

"Ahem!" Jiang Yu coughed dryly, his face was straight, and he took out the gesture of a brother, "Let's solve my dear sister's problem first!" After all, maybe you'll be my school sister next year. ”

"Hmph~"

Xiao Bury snorted twice meaninglessly, and let Jiang Yu go for the time being.

The two came to the kotatsu and sat down facing each other, Jiang Yu took the book and paper on the table and glanced at the title, looked at the proof process on the scratch paper, and said after a moment of silence: "The train of thought is fine, why don't you continue to push it on?" ”

"Huh? Hmm......" Xiao Bury tilted his head and thought about it, and replied as a matter of course, "Because it's very troublesome, I want to ask my brother if there is an easier way." ”

Jiang Yu was choked by this sentence, and after a moment of silence, he picked up the pen and ruler on the side and began to write and draw.

"Generally speaking, this kind of geometric proof problem can be considered from the perspective of coordinate system if it would be cumbersome if the general proof method is adopted. Select the appropriate origin to establish the coordinates, and then replace the useful points with coordinates according to the known conditions, and the edges formed by the points and points are used as vectors, and the geometric proof process is converted into a vector calculation process......"

Xiao buried his hands on his cheeks, looked at Jiang Yu who was talking steadily, and what quietly rose in his heart, Xu is proud, Xu is happy, Xu is warm, Xu is envious.

In the end, all those complicated feelings were hidden under the worship of being a sister.

"Wow~Brother is so powerful~"

The girl with crooked eyebrows and eyes said this with full emotion, and at the same time directly snatched the exercise book and scratch paper back from Jiang Yu's hand without pretentiousness, and began to think seriously.

Jiang Yu looked at this scene, smiled, got up and walked towards the entrance. After changing his shoes, putting on his scarf, and whispering "I'm out", he left the house and headed to the nearest station.

He'd already made an appointment with someone, well, actually his girlfriend Megumi, who he'd been dating for almost a year, about what he was going to do this afternoon.

……

Bunkyo-ku, Tokyo.

As one of the six wards in the center of the city, it is known for its education, and it represents the face of the entire Japanese education industry.

It is not only home to many of Japan's national and private universities, middle schools, and colleges and universities, so it has the reputation of being a cultural and educational district; It is also home to the main campus of the University of Tokyo, Japan's highest university.

Of course, Jiang Yu's trip was not to go to his school.

I got off the train at the previous stop of the University of Tokyo, walked down the street after walking out of the station, and after turning a corner, I saw an ordinary private university that was still a little famous.

Yes, there is no doubt that this is inextricably linked to Jiang Yu and the "Immortal Sichuan Library" to which Shi Yu belongs. To put it simply, this university and that library have the same person's investment.

Tightening the scarf that had been loosened due to the ample heating and crowds on the train, Jiang Yu walked into the campus that did not belong to him as usual and came to the downstairs of the second teaching building. Pulling out his hands that were clinging to the residual warmth in his pockets, he took out his mobile phone and sent a message to Megumi that he had arrived.

After a while, the sound of gentle footsteps came, and Jiang Yu, who was originally looking at the surrounding scenery, heard the sound and greeted with a smile: "Yo!" So fast today? ”

Hui brushed the hair that was scattered on his sideburns because he walked out of the teaching building quickly, didn't answer, put a hand directly into Jiang Yu's pocket, and said with a flat expression: "It's not early, let's go quickly." ”

Jiang Yu is not surprised by Hui's performance - it is precisely because he knows that his girlfriend doesn't care much about these things that he can casually say the kind of words that can be regarded as forbidden sentences among ordinary couples.

However, maybe it's because Hui doesn't care that this person has been hovering between life and death among ordinary couples, the boyfriend's side?

In other words, if you have a different relationship, this person will probably have been dumped.

Of course, at the same time, he was in his pocket and interlocked his fingers with the hand handed to him. The two of them kept this posture and walked towards the station.

And their conversations along the way also seem different from ordinary college student couples.

"What are you going to do tonight?"

"Hmm...... What does Yujun want to eat? Or do you have any food you want to eat? ”

"Eh, considering that girl's words...... Set Meal Three? ”

"Huh~ That's so troublesome."

"I'll help you out, so please."

So far, except for the "set meal three", it makes people want to complain a little, "Why are you so skilled?" "Outside, it's actually unremarkable.

But then......

"Speaking of which, are the preparations for Winter COMI completed?"

"I just contacted Brother Po Dao yesterday and he said everything is OK. Compared to this, how is Aki's plan? ”

"It's been almost two years, and you still call him that...... Forget it, as for Lun's side...... Well, well, it's a little bit better than before...... Right? ”

"So, can you really start a new project next spring?"

"Hey, Lun might cry when he hears this?"

"That has nothing to do with me." Megumi paused and added, "That's something she should be worried about." ”

"Sawamura......" Jiang Yu laughed, "Isn't she active this year?" And the spare time to pay attention to Lunye? ”

Hui Wenyan's face changed slightly, and he said in a fluttering tone: "Isn't Senior Sister Kasumigaoka also active?" But I didn't break it with you...... Our connection. ”

Jiang Yu's expression froze, and he felt that the hand in his pocket that he had been holding began to exert force, and he was a little panicked in his heart, but he still remained calm on his face, and said in a calm tone: "Is it?" Senior Sister Shiyu often contacts you? I haven't heard from her lately, except on Twitter or from the editor. Ah, but the "Literary Girl" published last month, I did read it and wrote a review for her, and I didn't know that this series had been written for so long. ”

"Really?" Megumi's tone didn't seem to care about this, "I'm more concerned about when the thirteenth volume of "Spring Things" will be published than this. ”

It's passed!

Jiang Yu breathed a sigh of relief and replied casually: "I'm writing and I'm writing." ”