Reborn in Tokyo after picking up Sayu who ran away from home

Chapter 385 Back to School
Fast forward to Monday.

early morning.

drip-

The alarm clock on the mobile phone stopped abruptly as soon as it started, and it didn't even come in a hurry to have fun for a second.

Kato Yusuke, who had taken a shower, had a towel on his head, and there was still a little moisture on his half-dry hair.

The tall and fit figure is wrapped in a bath towel, showing the side of a bathing man, but no one appreciates it.

He reached out to take off the uniform from the hook on the wall and put it on the bed, then found clean boxers and socks from the closet, and began to put them on.

panties first,

Then there is a flat white shirt, loose trousers, socks,
He carefully buttoned his shirt and tucked the hem into his trousers.

Put a black tie on the neckline, and put on a blue waistcoat.

And finally a black stand-up collar uniform jacket for fall...

After getting dressed, Kato Yusuke came to the bathroom, and tied the golden rope decoration representing the student council president to the neckline of the coat.

While drying her hair with a hairdryer, she checked her appearance in front of the mirror.

A cool and handsome young man appeared before his eyes.

Kato Yusuke thought about it, and adjusted his hairstyle, trying to make it less eye-catching, but it didn't help.

After all, no matter how much he fiddled with, that conspicuous silver-white hair stood out from the crowd, a feature that would never be overlooked.

With this in mind, I don't care anymore.

He doesn't care about other people's opinions, but he doesn't want his friends around him to ask questions.

This kind of dilemma mood is a bit like squatting at home to go to school, which makes him feel a little irritable.

Immediately returned to the living room.

Added two glasses of water to the drinking fountain.

Disturbed by his movement, the black cat staggered and stood up from the end of the bed, yawned with its mouth open, and stretched long.

A slender figure thus appears even more slender.

"Meow~"

The black cat jumped off the bed lightly, came to his side, and began to lick its paws and wash its face.

A body of fluffy black shiny hair is very shiny.

Kato Yusuke reached out and touched it twice, and the cat purred comfortably.

The low, flat white noise calmed him a little.

"Take a good look at the house and don't go to the workbench."

"Meow." The black cat curled his arm with its tail and responded softly.

Kato Yusuke looked at the cat, and vaguely understood why there was a saying that cats can treat depression.

Then he got up and walked towards the entrance, picked up the shoulder schoolbag that was placed there, put on his shoes and walked out...

……

Take the train to Toyosaki Station.

Turn a blind eye to sight along the way.

Come to the school 10 minutes later and enter Class E of the first year.

"..."

"..."

The originally noisy classroom seemed to have been pressed on the mute button, and it was silent.

Facing all kinds of gazes, Kato Yusuke returned to his seat indifferently. Although the breath exuding from his body was not cold, it also conveyed a feeling of not wanting to be talked to.

Until someone ignores this...

"Yo~"

With a yell, someone suddenly locked his neck from behind.

"Good morning, bastard."

Yamaguchi's carefree voice broke the silence, and it was clearly heard by Kato Yusuke.

"Where did you bastard go, you didn't even answer the phone and LINE, could it be that you went to Hawaii for vacation? Hurry up and tell me the truth before I blow your head off!"

Followed by Takei's voice.

"No, no, no. When it comes to Hawaii, you're the one who goes there, don't you realize that your skin is like lava chocolate? Xiao."

"Okay! Before I beat you up, give you ten seconds to reorganize your words, Black Boy No. [-]!"

"Your words are not convincing at all, and if I am number two, doesn't that mean you admit that you are number one black boy?"

"You forgot to add The super Yamaguchi!"

"Wow! Even if you speak so imposingly, you can't cover up the rusticity and middle school of this nickname at all?"

The bickering between the two said that the classroom was silent for a short time, and then burst into laughter in the next second.

Yamaguchi seemed unaware of this, and just continued to choke: "You are not qualified to say such a thing! Whether it is the color of the skin or the second grade, you are definitely exaggerating."

Takei laughed: "Well, at least I won't add strange nicknames to LINE's name. You mean that even middle school students can't do that kind of thing, don't you feel ashamed?"

"Damn it! Before I reveal all your shameful details, hurry up and laugh at Kato with me."

While talking, Yamaguchi scratched Kato Yusuke's hair, trying to divert the blame.

"How dare you secretly dye such a cool color without making a sound, you bloody fool, isn't this widening the gap between us again!"

Facing the burden he threw out, Takei took it very naturally.

"Ahaha. Basically, the last sentence is your truth, right?"

Affected by the laughter of the two, the atmosphere in the class also swept away the strange silence before, and became bright and joyful.

Kato Yusuke opened and closed his mouth, trying to say something, but he didn't speak.

He took a deep breath and nudged Yamaguchi's side lightly with his elbow, trying to get him to stop making fun of himself.

But Yamaguchi twisted his neck even harder, and said in a low voice:
"You bastard, don't you know how to tell your friends when you encounter difficulties? If you are not in the classroom now, I will definitely kick your annoying ass hard!"

Kato Yusuke put down his hand, and couldn't help being silent.

Takei on the side shouted exaggeratedly: "Wow! I always feel that Kato's face is going to turn pale, you are too hard!? Xiao Xiao."

This led to the echo of others.

"Wait a minute, Yamaguchi, you are so slow, don't really strangle Kato-san."

Yoshiko Himekawa, who had just walked into the classroom, ran over quickly and breathed a sigh of relief when she saw that nothing had happened.

"Although Kato-san has finished his sick leave, it doesn't mean he can be tossed about so lightly by you, understand?"

"Woman, you are so long-winded." Yamaguchi said with a cool face.

"Huh~? Did you say something just now? I'm sorry I didn't catch it, can I trouble you to say it again~? Xiaojun."

"Wow, your expression is too scary. You can't find a boyfriend like this."

"...I think you should worry about your situation, idiot!"

Then someone else cut in on the conversation.

"Ah, good morning, Yusuke."

Ebi Kako walked over slowly, her pure eyes stayed on Kato Yusuke's face for a while, and then greeted others.

"Well, good morning, Yamaguchi-san, Takei-san, you look very lively."

"Yeah, good morning, Vice President." Takei nodded with a hearty smile.

Yamaguchi also raised his hand to say hello: "Hi~"

"Please don't act like you think you're cool, Yamaguchi-san." Kako couldn't bear to look directly at her.

"It's so noisy to you, I didn't do it for you to see."

"If you keep saying that, I won't lend you the next homework, okay?"

"Oh, woman... Wait, I mean Yoshiko Himekawa is a god! So don't be so mean, forgive me—!"

"Thank you for being able to say the most embarrassing thing with such a cool expression, Ah Xiao?"

"Shut up, too! Idiot Takei."

Yamaguchi, Takei, and Kako left in a noisy manner.

Kato Yusuke looked at the few people, slightly absent-minded.

Suddenly, a hand gently reached out to the top of his head.

"Ah, your hair is a bit messy, let me fix it for you." Hui said in a calm tone, and gently smoothed out the hair that was messed up by Yamaguchi.

The two were very close.

He could clearly smell the faint fragrance wafting from the girl's body, like a combination of cherry blossoms and milk shower gel.

Light and nice smell, not pungent.

The atmosphere in the class has returned to the same activeness as before,

Some barriers seem to dissipate quietly.

The surrounding sounds seemed to suddenly become smaller.

Kato Yusuke looked around, feeling in a trance that he never seemed to leave.

A feeling of confusion gathered in his chest.

He narrowed his eyes a little and looked out of the window, feeling that today's sunlight was particularly glaring.

The last thing that was clear was the girl's clear voice like a gurgling stream.

"Hmm~ I fixed your hair for you."

……

The morning shift will start at 8:30.

Teacher Nakamura stepped into the classroom on time.

He glanced at the corner intentionally or unintentionally, his eyes flicked past the figure with conspicuous silver-white hair, and the emotion in his eyes flashed away.

Then start hosting the class meeting.

"Then, about this Friday's sports meeting, although everyone already knows about it, I still wish you good results and enjoy your youth that is only one year away."

"As for the reason why I brought this matter up again... Well, you heard me right, I told you, Kato-san."

Nakamura put his hands on the podium and said in a half-serious and half-joking tone:
"After resting for such a long time, show me your energy, and just win the first place in one breath, the teacher's award... No, it's our class's honor that depends on you, okay?"

The students immediately booed.

"Hey! Teacher, you just wanted to talk about bonuses, right?"

"I heard it too!"

"Wow, what a grown-up speech~"

"The teacher put too much pressure on Kato-san, right?"

"..."

Nakamura Katsuki was not annoyed by this, he deliberately showed a troubled expression, joked with the students with the reason of "the spur of love", and moved to the next topic after observing the situation.

"...and then another thing."

He coughed and said, "After the sports meeting is over, there will be a regular test in mid-October. Everyone, pay attention to arranging the time reasonably. If the score is too poor, you will still be required to take tutoring later?"

The previous laughter and laughter immediately turned into wailing.

After explaining things briefly, it was almost time for the first class.

After leaving an explanation for Yusuke to go to the office after class, Nakamura Katsura quickly turned and left.

……

The first class in the morning is the math class of Ms. Matsumoto.

Teaching progress is currently in a graphical nature.

The teacher drew a quadrilateral ABCD on the blackboard, assuming AB=a, BC=b, ∠A=θ.

This quadrilateral is known to satisfy:
∠A=∠B=∠C, π/3<θ<π/2, b<a<b/2cosθ.

Answer the following questions:

1. Suppose CD=c, please express c with a, b, θ.

2. Without changing the values ​​of a and b, find the minimum value of c when θ changes within the range of π/3<θ<π/2.

……

After Mr. Matsumoto finished drawing the picture and writing the topic, he looked around the classroom and was attracted by the conspicuous short silver hair in the corner.

After looking intently for a while.

Maybe it was to check on Yusuke's progress during his absence, or maybe he was simply mocked by his hair color.

Mr. Matsumoto called out his name: "Student number 40, Kato, come up and answer the question, including the process."

"..."

Kato Yusuke didn't say anything, he got up and went to the podium, took the chalk, and started to solve the problem.

First is the first question.

He took the chalk and added a few strokes on top of the quadrilateral on the blackboard.

Extend BC, AD; BA, CD.

Considering the midpoint P of AB, we know that EAcosθ=AP.

And because EA=EB,

So EA=EB=a/2cosθ,

In the same way, FB=b/2cosθ can be obtained.

Then use Menelaus' theorem to write a series of formulas and solve the answer.

c=a-2bcosθ+4cos^2θc
c=(a-2bcosθ)/(1-4cos^2θ)

Teacher Matsumoto crossed his arms and stood aside, about to speak...

Da, da, da, da.

Kato Yusuke answered the second question again.

Mr. Matsumoto immediately shut up and watched him solve the problem silently.

Holding a chalk, he wrote continuously on the blackboard, exuding a quiet and steady aura.

Let cosθ=t,

Then c=(a-2bt)/(1-4t^2)

dc/dt=【-2b（1-4t^2）+8t（a-2bt）】/（1-4t^2）^2
The denominator is positive, and the numerator is simplified.

Get: -2 (4bt^2-4at+b)

Considering the value range and increase or decrease of the cosine function,

There is a minimum value when t=[a-√(a^2-b^2)]/2b,
Calculated to get:

c=[a+√(a^2-b^2)]/2
Kato Yusuke put down the chalk and looked at Matsumoto-sensei beside him.

Mr. Matsumoto pursed his mouth and looked at the problem-solving process on the blackboard. The smooth sound of chalk still echoed in his ears.

There was silence in the classroom below.

The students were either thoughtful, or frowning, or thinking hard, or drowsy...

Although there were people doing everything, no one made any noise.

After all, the old man standing on the podium is known for being strict.

a while.

Matsumoto looked away from the blackboard, turned to look at him, and nodded, "Okay, you can go down now."

Facing all kinds of gazes, Kato Yusuke turned and returned to his seat.

"Cough cough..."

Teacher Matsumoto coughed, attracted the students' attention, and spoke in a low voice.

"Come on, the process of answering the second question is what we will learn today, so please pay attention to the lecture."

The students were taken aback for a moment, and then immediately reacted.

——Old man Matsumoto is embarrassing others with what he hasn't mentioned yet!
After realizing this.

Involuntarily, pairs of shining eyes converged on the boy in the corner.

Kato Yusuke turned a blind eye to the surroundings, just supported one cheek with one hand, and his eyes fell on the books spread out on the table.It seems to be pondering slowly, and it seems to be thinking about something else.

The morning light outside the window, through the luxuriant ginkgo tree, sprinkled spots on his body.

The boy's expression was indifferent, but he was endowed with an indescribable sense of gentleness by the sunlight and the current atmosphere.

It was as if he was surrounded by a layer of hazy mist, which was hard to see, but very beautiful.

Like the evening wind hugging the moon, the waves kissing the reef.

He sits there, the light does not shine, and the dust is with the light.

It's like traveling through time.

……

　There is one more chapter, coded and released.

　　Thanks to [Book Friends 2021030110402401976] and [Magic Feng Xiyang] for their rewards.

　　
　
(End of this chapter)