Chapter 164: Hello, Sister-in-Law

"The disturbance from yesterday... They're only three magi. Not comparable to a Servant, hah!"

Shinji paced back and forth as he received the results of Rider's reconnaissance. She saw that the three who caused the disturbance in Ryuudou Temple are all humans. Moreover, while she did sense magical power that vast surpasses most of the magus in this era, it's still negligible in the face of a Servant.

Only, if he knew that Soul Gems will give off weaker fluctuations when inactive...

"Rider, everything will happen tomorrow."

"...Yes."

Looking at this extremely annoying and punchable face, Rider almost couldn't restrain herself. Still, she prevented her actions as she knew that this would only lead to her true master suffering.

*****

The next day.

Everything went the same as yesterday. Shirou trained with Sayaka for an hour and prepared breakfast. Though, the former did not expect something different today.

"Emiya-san, can I go with you today to your school?"

"Eh? Shiro-san?" He replied.

"There's the Bounded Field that siphons off the students' life force, remember? I would like to take a look at that. Also... she might be an acquaintance."

"Acquaintance?"

As they are outside, only Rin, Archer, Shirou, and Saber had heard of it. Seeing their confused expressions, Shiro said, "It's hard to explain. You might see it later on during the school."

"A Heroic Spirit... Acquaintance... Could it be..?" Rin murmured as she arrived at the greatest probability at this moment. 'He also knew much about the Grail War, so... he's a Magician?'

With the help of the books in her residence, she knew that there are a total of five [True Magics]. Each of their wielders are unknown, but it is stated that they exist.

Knowing that the little boy behind her is possibly a Magician... she felt complicated for a moment.

'Since it involves space... No, Our ancestor's master isn't a small child!'

While her thoughts are in a spiraling mess, Shirou agreed on his suggestion.

"We also have to deal with it, right. I won't let them cause those deaths..!"

Meanwhile, Rin sent her thoughts to Archer.

'It's possible. I can eliminate the possibility of him being the Second nor the Fifth, so that leaves him with the First or the Fourth. Wait a second...'

Remembering Shiro's weird state and his severely damaged soul, another possibility popped up in his mind.

'If so, he might have... the Third?'

Looking at them, Shiro laughed inwardly as he saw them go hectic internally.

Then, he sent a telepathic message to Sayaka and Mami, telling them of their itenary for today.

'Mami-chan, Sayaka-chan, we'll have to deal with something today. We might be seeing... Well, someone important to me.'

'Someone important to sensei?' The two of them thought at the same time.

'Your friend?!'

'Your wife?!'

Fortunately, they shut off their connections at that moment. Else, it'll be an extremely embarrassing situation to them.

(A/N: You can guess who said which thing...)

After some time, Shirou closed the front door to his residence and locked it as Taiga had gone ahead for school. Sakura didn't make breakfast today since she stayed at Matou's household today. If not for the fact that their lives are forfeit today, Shiro would've attacked them with Sayaka and Mami already.

As to why he didn't attack them yesterday?

He's quite worried for his two disciples, and the fact that the [Old World Suit] was still recharging at that time. That's right, he intends to go there even with his severe injuries.

'I killed them when I didn't have the assistance of SSR-rated items. Now that I have it, there's a higher chance of succeeding.'

Yes, it might sound arrogant if said by others, but it is Shiro who said it. Coupled with his vast amount of wealth from the Chat Group, he can bombard them to death with his wealth. Technically, he could use his mini antimatter bombs, Rune Stones, talismans, and many more to bombard his enemy to death—all without worsening his current state.

On top of that, his combat power is way stronger than before. Together with the help of two Servants and his students, he's more confident in this plan.

'For now... I shall go and meet her.'

*****

Homuhara Academy is the local school in Fuyuki City since the time it was built. It has a long history in it, such as bearing witness to two Holy Grail Wars.

And now... it'll be a venue for one.

It is currently lunch time, and Shiro wandered around the campus all this time with the help of his [Concealment Mask]. Though, he went to the sports field once he sensed the arrival of a certain someone.

Moments later, the Bounded Field engraved all over the school was activated. Black-red lightning bolts were generated before it converged into a spherical shape. Then, it soon turned into an eye that bore pressure all over the school.

At this instant, everyone except Rin, Shirou, and Shiro went unconscious.

"I see."

After making such a bad pun, Shiro looked at a room in the fourth floor. Even though his senses doesn't extend up to there, he could guess that someone's staring at him.

Not minding it, he connected to the telepathic link instead.

{Mami-chan, did anyone else arrive?}

{No, there's none. Sensei, it's only Rider and... Shinji Matou.}

{Alright. Stay behind for a while. Maybe we would lure out more Servants with this bait.}

{I understand.}

Cutting off the link, Shiro made a squatting position.

hum-! Hum-!

The nanomachines suit underneath his casual clothing made a small humming sound as he did so. Then, he was soon launched dozens of meters to the sky—without any use of his powers nonetheless.

"There, huh."

Right after he took out the [Fragrant Olive Sword] in its sheath, he felt its heavy weight. Though, he managed to handle it properly through the help of his [Old World Suit], which increased the amount of power that he could bring out in his injured state.

Without hesitation, he threw it to that direction, breaking a portion of the school's side and creating a huge dust cloud at the same time.

It didn't take long before Shiro reached to that place.

Tap-!

As he landed, it formed huge craters beneath his feet. He didn't have the usual mana nor aura to soften the impact, hence it happened.

"W-w-WHO ARE YOU?!"

Shinji backed into a corner since he had seen the Servant-like prowess that this little kid in front of him has.

"...Our Shinji is much better than the likes of you."

Shiro ran and chased after him. Not long after, he caught him by his collar.

Clang-!

A kusarigama-like weapon came flying at his head, but Shiro easily deflected it with a swing. Then, he counterattacked by dashing straight at her, all the whilst pushing her with his golden blade.

Ding-!

Rider had successfully escaped from his attack, but she realized that she's free-falling right now.

With that, she focused on landing unscathed first.

Bam-!

Shiro soon followed her by jumping from the fourth floor... together with Shinji in tow.

"AHHHHH!!!"

He kept making pathetic and fearful faces as they fell for 30 or so meters.

Bam-!

Without anything to soften the impact, Shinji met the full brunt of the air resistance as well as the shockwaves produced by Shiro's landings. Only when he calmed down did he saw Shirou and Rin not far away from him.

"You go take care of this... trash." Shiro's child-like voice echoed out in the field, but no one rebutted him.

"W-wha-?!"

While squealing like a pig, he was thrown at their direction. It was unknown whether he broke a few bones or not.

Even Shirou, someone who had tolerated him for the sake of Sakura, could no longer forgive him for his attempted massacre of hundreds of students and teachers.

Meanwhile, Shiro is having a silent confrontation with Rider as of the moment. He sensed what she's confused about, so he went ahead of her and said:

"You might be confused about me, but let me introduce myself." Shiro coughed for a moment before continuing with a smile, "Greetings, sister-in-law."

Silence fell on the field, with all of them dumbfounded upon Shiro's revelation.

*****

Side Story: Legendary Mechanic

Seeing the plethora of exp that she couldn't even fully spend, Kouzuki felt frustrated.

"...I can understand Shiro for the first time."

The feeling of being wealthy yet unable to utilize most of them is... very frustrating. It has been a few days since Kouzuki received the long exp prompt.

[You have received 199,022,911...]

"So they did it."

As their friend, she is happy to see that they have succeeded in that dubious quest. Though, she got surprised by the sheer amount of exp that she got, indicating that their enemy is no joke.

After a few days of deliberation, she still hadn't fully consumed it. Due to the fact that her class, Mechanic, has so much things to think about, she only became a [Data Mechanic], someone who's on the verge of her second specialization.

However, this [Data Mechanic] is on the same level as B ranked Supers. In Shiro's power system, they far surpass a Demigod, but under an Ascendant God.

As for her chosen race, she bought the [Mystic Chaos Void Dragon] bloodline. She spent more than 60% of her exp alone with this. Albeit, this secured the basis of her racial path until the end of her evolutionary path, the so-called [Legendary Mechanic].

The remaining exp left was used to upgrade up to Level 95. Together with the maxed-out blueprints and [Talents], there's less than 10% of that exp remaining.

Still, that 10% is enough to max out her class and level up to the next profession.

"The deployment of XM3-system went well. Though..."

From her computer, dozens of windows opened up. Each of them pertains to the operation status of the autonomous TSF units that she made herself. With the help of Cardinal, a <<Bottom-up AI>> that is not different from humans, several AI units were made.

Adding Shiro's Celestial Being introduction from before, she made this fictional organization a reality. Every week, they sweep around high-risk BETA hives, lessening the pressure that humanity is experiencing.

While the other world powers tried to find their origins, they are all met with a dead-end. All thanks to this unassuming computer on top of her desk.

[Supercomputer]

Type: Multi-unit Supercomputer

Grade: Orange

Base stats:

-Durability: 19,998/20,000

Requirement(s): Advanced Machinery Affinity, Intermediate Mechanical Sense, Surging Mechanical Force

Ability: Houses 14 Virtual Lifeforms and provides processing power to their top condition. It also has a self-repairing function when connected to an energy source.

Additional Effect: When all 14 Lifeforms are present in the unit, the processing speed is increased by 2.2x/

Additional Effect: Has High-level Resistance to heat, cold, and any forms of virtual intrusion.

Additional Effect: Nullifies any form of tracing of machinery lower than it.

Additional Effect: Once [Surging Mechanical Force] is used, the [Specialized] form is activated.

In fact, it is connected to the rest of the processing units back in 00 Unit's room. With that, she can remotely control the Celestial Being from the back.

"I should increase my production rate... until this organization's official debut."

Once more, the future [Legendary Mechanic] started her hard work along with her [Mechanic's Base (SSR)]. No one in this world knows, but the sheer number of force that she's creating is getting more and more terrifying...