I planted a sacred tree in Tokyo.

Chapter 311 Tokyo Metropolitan Higher Vocational School of Jujutsu (High School)
"You're asking me how this knife was developed?"

Looking at the ninja sword on the table in front of him, which had been 'freshly forged' half an hour earlier, Yu couldn't help but look up at the ceiling.

"If I'm not mistaken, you just got this from the summit of Mount Fuji, right?"

"Yes, Yu-kun."

With a smile on her face, Director Zhu Ya spread her hands to indicate the scroll on the table in front of her. Ahem, extraordinary sword.

"This blade is named 'Exploding Blade - Spray',"

"Its special feature is that after being infused with spiritual power, it can create 'explosion talismans' out of thin air."

Explosion talismans are no longer rare items. Onmyoji from the Hanakain and Isoya families can draw them; at the same time, some have also flowed into the supernatural community, collected by many wealthy 'dog-level' individuals as self-defense tools.

This thing may seem insignificant, but if you're careless and get hit right in the face by an explosion, even a wolf-level creature will be seriously injured.

If a dozen or so cards are combined to create a trap, it's quite normal for them to kill a Wolf-level Extraordinary.

Moreover, this kind of talisman can deal full damage to 'evil spirits'.

It is a 'strategic material' that the government covets but cannot obtain!
"Unfortunately, the talisman created from this knife cannot be preserved; it must be used immediately. Otherwise—"

Director Zhuya looked regretful. If this knife could continuously generate 'explosive talismans,' it would be a true treasure of the island nation: equipping each soldier with dozens of them would be enough to sweep away evil spirits in the mountains and fields.

In today's island nation, order can still be maintained in the big cities; but not far outside the city, traffic becomes difficult due to the rampant evil spirits.

Many remote villages and towns either become deserted 'dead villages' after all the people have fled, or the local superhumans act arrogantly and exploit ordinary people, causing a lot of trouble.

The number of superhumans in the Superhuman Countermeasures Division has swelled to several thousand; seemingly a lot, but still insufficient to protect tens of millions of islanders. Moreover, the presence of top-tier superhuman threats like Abe no Seimei and Yamata no Orochi has caused widespread panic and a sense of impending doom.

If this continues,

What future do island nations have?

"So, as soon as I got this knife, the first thing I did was come to ask Yu-kun for advice."

At this point, Director Zhu Ya also expressed her helplessness; under normal circumstances, those who obtain extraordinary swords should make an effort to explore their uses and then achieve true 'unity of man and sword' through repeated practical combat in order to fully unleash the power of extraordinary swords.

but--

"I simply don't have the time."

All the extraordinary affairs of the entire island nation rested on Director Takeya's shoulders.

In particular, a lot of intelligence is the kind that 'the fewer people who know it, the better,' which means that this extraordinary head of government is so busy every day that he barely gets two hours of sleep!
If it weren't for being an extraordinary individual and having access to various extraordinary resources, Director Zhuya would have been exhausted long ago.

He can get the shrine maidens of the Inari god's shrine to come and cast healing spells on him regularly.

You admire this spirit of working overtime.

"That's it,"

Yu is quite familiar with Director Zhuya's life.

In the past, the crows circling in front of the Metropolitan Police Department never disappeared.

Yu has never underestimated the island nation's government institutions: if they are not cautious enough, they would not dare to claim invincibility before mastering the 'Flying Thunder God Technique' if they were to slip up.

"I know some of the spells inscribed on this sword."

In that case,

You raised his hand and stroked the scroll's 'blade'.

As his hand swept across the air, the layers of explosive symbols with the character '爆' (explosion) written on them on the blade flickered.

The pattern on each talisman changed from a circle of incantations surrounding the character '爆' to a central '爆' with four '爆' characters extending outwards.

?

“This is a ‘multiplication explosion symbol’,”

Without further ado, Yu gave the answer directly.

"Once attached to an enemy, a single explosive tag can continuously summon new explosive tags and trigger a series of targeted, concentrated explosions."

"It can be described as a technique of 'infinite explosion'!"

As she spoke, You pointed to the knife and added.

"Unlimited power!"

???

Upon hearing this, not only Director Zhuya, but also Qiongmei who was scrolling through her phone in the living room and Youluo who was doing her homework looked up.

"Unlimited power?"

Chewing on this assessment, Director Zhu Ya found it somewhat unbelievable.

"Such a technique actually exists?!"

It wasn't that he didn't believe Yu, but rather that such a statement was simply too absurd: if such a powerful technique truly existed, then when he fought Abe no Seimei—"Is the director perhaps wondering why I didn't use this move when I fought Abe no Seimei?"

No extraordinary abilities are needed; Yu can guess what the other person is thinking.

"First of all, this technique requires physical contact with the target."

You spread your hands.
"If I could actually meet Abe no Seimei, would I need this kind of technique?"

Onmyoji are notoriously fragile; if someone gets close, wouldn't it be better to just cut them in two with one strike?

"Secondly, the so-called 'limitless power' also requires the caster to provide spiritual energy: even in the extraordinary world, basic rules still apply."

"I think I understand,"

After thinking for a moment, Director Zhu Ya said...

"As long as I can hit the enemy with this sword and activate the spell, I can make explosive runes continuously appear in their wounds?"

"right,"

This is Tobirama Senju's technique, used in conjunction with the Impure World Reincarnation: its main usage is to first use Impure World Reincarnation to summon the dead, and then use the Multiplication of Explosive Tags to cover the dead with explosive tags, making them attack the opponent like human bombs.

It was ridiculed by many of the older Kage-level ninjas in the Naruto world as the most 'shameless' ninjutsu.

Of course, there is another use, which is to stick the Flying Thunder God to someone else.

While the power of a single explosive tag is nothing, the power of a multiplied explosive tag is terrifying: when Tobirama used it, he could even destroy Hashirama's "Myojin Gate" and blow away many of the Ten-Tails' split bodies.

Of course, the effect that Director Zhuya can achieve depends on his own skill level.

"Just think of it as a poisoned dagger that can kill instantly."

As Yu explained the technique, the multiplicative explosion talisman on the 'explosive blade' began to fade, returning to a normal 'explosive talisman'.

"In the end, it is still a knife."

"What effect you can get depends on the user."

Whether the real 'Exploding Blade: Spray' possesses this ability, Yu doesn't know. It's just that one of the original Seven Ninja Swordsmen of the Mist said that if the Exploding Blade were destroyed, the resulting explosion could even annihilate an Edo Tensei—however, in the manga before his time travel, no one had yet verified this claim.

In short, this explosive blade, which he inscribed with the 'mutually multiplying explosive rune', is definitely a very powerful extraordinary weapon!
"alright--"

You raised her hand towards the door.
"Wait a moment, I have something else to do."

They were given the 'eviction notice,' but who exactly is Director Zhu Ya?

Let alone just a gesture, even if someone points a finger at him and curses him, he can just smile and let it go.

"Yu-kun, you've already graduated from high school; I doubt any university would dare to admit a man like you."

“When Bunkyo Ward was destroyed, the government planned to establish a ‘Tokyo Metropolitan Jujutsu Higher Specialized School’ during the reconstruction, abbreviated as Jujutsu High School.”

"I hereby extend my sincere invitation to Yu-kun to serve as 'Principal': In the entire island nation, no one but Yu-kun is qualified."

"You really can't stand seeing extraordinary individuals idle, can you?"

Director Zhuya had brought this up once before, but You decisively refused.

The title of "principal of a 'spellcasting school'" sounds like it's full of debuffs; but now that Yu has mastered the Flying Thunder God Technique, his clones are constantly expanding their territory in the 'Yellow Springs,' and neither the material nor the spiritual level can kill him.

Besides, high school is over. Staying at home is not impossible, but it's a bit too "homebody".

"alright."

In the end, Yu agreed.

With nothing else to do, aside from visiting 'his' sacred tree and chatting with Xiaoying and Yiye, Yu's life consisted of listening to Nao report on the family business, listening to Yuluo report on her studies, and listening to Qiongmei tell interesting stories about the extraordinary world. It was 'simple and unpretentious' to the extreme.

At least that's how it appears to others.

Little did she know that Yu received a large number of memories transmitted back by her shadow clones every day.

"Great!"

Surprisingly, Yu, who always refused, actually agreed.

Director Zhuya was stunned at first, then overjoyed; she was even more excited than when she received the extraordinary sword 'Exploding Blade·Flying Drop'.

While Yu-kun is indeed the 'pillar of the nation,' his personality is too indifferent. I don't expect him to be proactive, but I hope he can teach a few students like Yura Hanakain, which would alleviate the precarious situation of the island nation.

"It is truly a blessing for our island nation that Yu-kun is willing to take on the position of principal."

"In fact, not only the Spellcasting Academy, but the government is also planning to establish a new area in Bunkyo Ward to cultivate students with extraordinary talents."

These are top secrets of the island nation, currently known only to a dozen or so cabinet ministers; however, since Yu has already agreed to serve as the principal of the 'High School of Curses,' he is naturally qualified to know these things.

? ?
As Director Zhu Ya continued her eloquent introduction, You seemed slightly stunned.

Isn't this Academy City?
(End of this chapter)