Monday afternoon, the Ninja School Sealing Office.

Since Kushina went to the classroom to supervise everyone to practice drawing runes, Natsuhiko was the only one left in the office.

At this time, he was sitting at his desk, humming a little song while repairing the combat probe that had been blown up by Maite Dai.

Looks like he's in a good mood.

After all, he had gained a lot in the past two days, and he had gained a lot of useful things from that root ninja.

First of all, of course, it was the illusion that he called Beitianzui.

After unremitting efforts, No. 2 finally got a rough analysis of this technique.

Unlike ordinary illusions, which make opponents hallucinate, this technique directly affects emotions through chakra, which greatly inspires Natsuhiko.

After all, chakra is the product of a one-to-one mix of mental energy and physical energy.

There is naturally a very strong connection between emotions and chakra nature.

For example, Senjuma has studied that when the Uchiha people lose something important, a strong hatred will cause a special chakra to emerge in the brain, acting on the optic nerve and causing changes in the eyes.

And this is the so-called pupil that reflects the soul - the writing wheel eye.

At the same time, after the appearance of this chakra, it will in turn affect the spirit, causing a person's personality to change drastically and fall into the evil path.

As for why the second generation is so clear about the physiological principle of the wheel eye, we will not mention this topic for the time being.

So when the root ninja broke into his house in the middle of the night and was captured by the defensive barrier.

Xia Yan held the idea of doing nothing and decided to test his thinking on him.

So he threw the ninja into a chest reinforced with seals and told him to play cards in fear of being overwhelmed by natto.

Then by studying the chakra drawn from the Thrill Ninja game machine, he explores the relationship between emotions and the nature of chakra.

Sure enough, under the pressure of natto hell, the chakra of the root ninja underwent drastic changes.

In other words, if you are the protagonist, you should open the writing wheel, and if you should explode the nine-tails, you will explode the nine-tails.

It's a pity that this benevolent brother doesn't have the aura of the protagonist, and he fears for most of the day in extreme fear, until the chakra is exhausted.

However, Xia Yan also got a lot of interesting data because of this, and at the same time disposed of a large pile of natto that No. 3 secretly bought at home.

It's a win-win.

Although Natsuhiko hasn't figured out what this research will do, this set of equipment can be changed and sold to the Uchiha clan at a high price in the future.

Let them open their eyes too.

Anyway, this machine was also pickled by natto, and Xia Yan didn't dare to take it out of the storage scroll at all.

In the end, Natsuhiko also got a surprise from this root ninja.

That was when he found a rune in the chakra that he had never seen before.

Based on his memory of the original work, Xia Yan quickly judged that this thing should be the infamous spell seal technique.

It seems that in addition to the curse mark on the surface of the body, there is also a spell mark technique hidden in the chakra in the body.

As one of the most secret and evil seals, the curse seal has always been passed down by word of mouth, and it is rarely recorded with paper and pencil to circulate outside, so Xia Yan has rarely dabbled in this knowledge.

Now that he has met it, he will naturally not let go of the opportunity to research.

After observation, Xia Yan found that the principle of simply absorbing the opponent's chakra was different from many sealing techniques.

The spell seal technique is directly rooted in the soul, and when the host refines the chakra, it will incorporate its own information to form a new spell seal spell to achieve the purpose of self-replication.

This reminded him of a familiar thing - a virus.

The same enters from the outside world, the same parasitizes in the human body, and uses resources to replicate itself.

It can be latent in the human body to make people unconscious, and it can also be expressed, so that the human body has various adverse reactions and even death.

So the curse sigil is essentially a chakra virus?

Like, it's quite reasonable.

Since Runes is a programming language for chakra, it's not surprising that the sigil is a chakra virus.

So, is this chakra virus a computer virus or a biological virus?

Xia Yan soon realized that the spell seal technique was very important to his subsequent research, and even some of his plans would be adjusted because of this.

It seems that there is more to study.

Xia Yan smiled helplessly, this is really a luxury trouble.

……

When it was time for school to get out of school, Xia Yan had just repaired the combat power detector when he heard the footsteps and talking of several people outside the door.

Sounds like they're arguing about something.

The office door then opened, and six members of the research team walked in.

I saw the red breath, while Rin, Asma, and Ebisu looked helpless, and Akai was as full of vitality as ever.

Only Obito was depressed, and finally walked into the office.

Gotcha, it looks like our Tu Ge'er is in trouble again.

However, Xia Yan didn't care, and after putting the combat power detector away, he said:

"I've put my training clothes and meridian scrolls on the table over there, so let's change your clothes first."

However, as soon as he finished speaking, only Akai happily walked over and picked up his training clothes, and everyone else had a sad face.

"Teacher, teacher!"

Hong hurriedly ran to Xia Yan, tilted his head, and said with a cute face:

"Teacher, can we do the activity in a different place?"

"Oh? Is the training ground behind the school building bad? Xia Yan said casually.

Speaking of this, Hong became angry: "It's all to blame for that stupid guy who brought the soil to tell others about our activities there!" So everyone said they were going to see it after school! ”

Obito shrank his neck when he heard this, and he was also a little embarrassed.

He is now also acutely aware of his mistakes.

After all, doesn't this mean that Lynn's tights are going to be looked at?

When Red thought of being seen by everyone in tights, she had a heart to die.

So she pleaded with a pleading face: "So can we change places, is the teacher okay?" ”

Everyone also looked at Xia Yan with expectant eyes.

In addition to Akai, he said that he would be even more excited to be watched.

Xia Yan touched his chin and groaned, brewing a tense atmosphere by the way.

Then he said slowly:

"A man's worth lies in his talent, not in his clothing."

"Even if wearing this training uniform will attract everyone's ridicule, as long as it can improve our strength, so what's the matter."

"One day, ten days, they might still be laughing."

"But what about a hundred days, two hundred days later? At that time, I was sure they would never laugh again. ”

"Because we've gotten stronger?" Asma looked forward to it.

"No, because that's when the training suit will be popular in schools."

Everyone fell suddenly!

All right.

That would really make everyone laugh.

But we can't laugh either!

Seeing that everyone was speechless, Xia Yan had no choice but to clap his hands and say:

"Alright, alright, so be it. I'll be wearing my training clothes this time, so you'll be fine. ”

When everyone heard this, they were shocked and looked at each other.

They always thought that the shape of this training uniform, in addition to functional reasons, did not have a little bad taste of Teacher Xia Yan.

But Teacher Xia Yan now took the initiative to wear this training uniform.

Did they blame the teacher?

So except for Akai, everyone was ashamed and sympathetic.

is ashamed to blame the good people, but also sympathizes with the teacher's aesthetic is too bad, and it is almost the same as Matt and his son.

Since Teacher Xia Yan was the first to take the lead, everyone had nothing to say, so they had to pick up a training uniform.

Red and Lin went to the cubicle as usual, and the boys began to change their clothes.

But after everyone was dressed, they found that Teacher Xia Yan was still standing, so Asma was a little curious:

"Teacher, aren't you going to change your training clothes too?"

Xia Yan smiled:

"No hurry, because I'm already wearing it."

With that, he unbuttoned his white shirt with both hands, revealing a black tights inside.

There is also a white bat motif on the chest part......