High School Hack and Slash Chapter 105x Part 3

A number of prototypes of the multi-legged mobile tank, which was unveiled at the school festival and was highly praised by the Craftsmen, had been built.

What used as the power source used was 『elemental crystal』, a pure energy crystal refined and extracted from monster crystals.

Elemental crystals were used as batteries, cultured monster muscles were used as cylinders, and monster materials were also used for all sorts of gimmicks.

It was fortunate that the ability organs, which were biological organs of monsters, functioned almost independently.

What proved to be the bottleneck in the construction of such a multi-legged mobile tank was, above all, the control system.

In order to organically coordinate and unify the machinery, what Chieri and Kakine, who were in charge of the construction, created was an artificial monster crystal.

The colorless and transparent monster model created by Chieri, who had obtained the classes of 『Alchemist』 and 『Mystic User (Kabbalist)』, and Kakine, who had obtained the classes of 『Engineer』 and 『Creator (Developer)』.

It was a universal matter itself, even more refined than elemental crystals.

It was a matter that could be called the 『monster essence crystal』 before the monster’s 『being』 was fixed.

Being implanted with such mysterious crystals and perfected with precision and consistency, the machines thoroughly turned into pseudo-life forms.

The first one to be created was a small-sized spider-shaped mobile weapon about 30 centimeters in length.

Since it made use of the cultured cells of the monster 『Ushi-oni』, it properly came to be capable of ejecting strings as well.

A slightly larger, dog-shaped four-legged mobile weapon and a multi-legged mobile weapon with arms were also built.

Unless it was an intricate machine that had enough completion level as a pseudo-life form, it would not be monstersified, which also meant that the crystal would not turn into its control system.

And then, after creating tons of prototype models following their preferences, when they were finally building a multi-legged mobile tank of a size boardable by humans, Chieri and Kakine finally realized the mess they had caused.

Seeing that their babies were moving around the plant on their own, as the control crystals adapted to the machines over time, they were at their wit’s end.

The control crystals as well as the elemental crystals, the fuel, were heavily shielded to prevent them from volatilizing even on the above ground, where the miasma concentration was low, and as if that alone wasn’t enough, they were even equipped with a ground-breaking system where they could recharge themselves by collecting the miasma in the atmosphere.

With the level of the miasma concentration in the vicinity of Asagi-sou, they would not naturally shut down.

What was fortunate was the fact that the control crystal, the 『monster essence crystal』, was in an immaculate state, granted with no directivity.

They were neither dungeon monsters that were implanted with a hostile reaction to challengers nor naturally occurring-type of monsters that were born in response to human’s conceptions.

It was the birth of too unique of monsters, molded by Chieri and Kakine’s wishes.

There was no way the two of them could destroy the children who cherished them as their creators.

Telling them not to bother everyone, they tossed them into the surrounding forest.

Nonetheless, rather than kicking them out, the correct significance was that the two were simply letting them act freely.

『Not to bother everyone』, they exterminated the monster that sprang up in the surroundings and raised their level, they decided their respective territory with their creature-like rivals, and if they sustained damage, they returned to the plant and asked to be repaired, or upgraded.

In such a manner, they naturally established the behavior of protecting their creators as well as their comrades, and their den.

The machines, which were built to the same standards, had the nature of a colony that shared information records.

The more brethren they had, the more flexible of a colony they became.

After a certain seal, which had been sealed in the underground of Asagi-sou, was broken, the threshold had been completely crossed.

They had reached a realm of evolution unintended by their creators.

◇ ◇ ◇

「Hnn, ahn, ahn, nngh!」

The manhood, which she was accepting for the first time in a long time, was gouging her up all the way to the depth of her womb.

The manhood, which was as if it had been customized exclusively for her, was precisely rubbing her in her sensitive places.

As if transforming itself in response to her reactions, it was gradually turning into a better and better manhood.

Partly because it had been a while, she was unable to hold back her voice.

Lying face down and clutching the sheets, she raised a moan as her ass was being vigorously gouged.

Of all the men who had embraced her, the member that was being inserted into her was turning into a thickness and shape that fitted her best.

There was no way for her to be able to endure it, and she got herself stirred up to orgasm as it was.

「Aahn, ahn, ahn~…!」

*Splurt* The liquid being poured deep inside the womb pushed her to an even more profound realm of orgasm.

When the gritty, pea-like foreign object was embedded into her womb, it was on the level where she wound up getting lost in the profound pleasure that was numbing her lower body.

「You mustn’t do that. To pour your seed inside Senpai’s belly, who hasn’t gotten used to it yet… Huh, you’ve done it already? Geez, what an impatient child you are. Just kidding, I also had my stomach impregnated right after laying this child’s egg, though.」

The impish happy go lucky voice of her junior brought her back to consciousness, which had been clouded by ecstasy.

「Ahn… Don’t rub and stretch the entrance of my womb. I can’t bear two at once, you know… If my belly gets bloated, I will be suspected by everyone.」

She woke up to the sight of her junior half naked in someone’s room, shaking her hips in the air.

「… Wh, what are you doing?」

「Ah. Senpai, hnn, good morning.」

The back of her junior who was naked above the waist, the foreign body that was worn like a corset was bizarre.

The body, which was a fusion of mechanical exoskeleton and biological details, looked as if it had a spider stuck to the back of the waist.

Four pairs of arthropods on either side were biting into her sides, two of which were even fused to her flesh.

The monstrosity that clung along her spine didn’t not look like a bodysuit.

If she were to wear baggy clothes, it would surely not be so noticeable.

Yes, if it were clothes like the ones her junior wore all the time these days.

「Wh, what in the world is that …?」

「Ahn, aahn!」

The tube that was extended from the spider’s buttocks crawled into the crotch of her junior.

*Squelch squelch* The sound echoing from the depth of her junior’s flesh told her the significance of that action.

For some reason, she did not feel that much repulsion at this horrifying sight, which looked as if she were being raped by a parasite.

Even though it sported a spider shape, there was even a stylish beauty in its design.

No, she shook her head and let out a sigh.

She ended up raising a scream when she woke up last night, but she recalled that it was already too late of a matter now.

According to the persuasion, or rather threat, that she heard from her junior, that spider mecha couldn’t be said to not be a kind of fusion-type magic item.

Moreover, there were semi-sentient-type magic items, and she had even seen some autonomous mobile-type magic items.

Though, putting them all together, it was the first the time she had seen ones equipped with an erotic function.

On top of that, once they were fused together, they became one and apparently were even recognized as the same existence by the undead system of Rashomon.

「Like I’ve told you, Senpai, it’s not a fusion, but a coexistence, ahn!」

The tube that was crammed into her junior’s buttocks pulsated, and some kind of liquid overflowed from her nether region with a spurt.

I wonder liquid of what manner of component that thing is, she thought at this late of the game.

Though, certainly, it was highly satisfying to have that thing injected during orgasm.

She let out a sigh at the spider-shaped corset that was also sticking to her own waist.

The movement of the thing, which had also been inserted into her own secret place all the time, was getting bolder and bolder.

In all likelihood, it had been inserted into her in such a manner even while she was sleeping, customizing itself to best suit her.

Otherwise, there was no way it would feel so good.

「Aah, no, it’s bad. I’ve been so backed up, so… It’s real bad.」

Even if she wanted to resist, she had no means to refuse the reproductive tube that was stretched out from the spider mecha that was sticking tightly to the top of her buttocks.

Even if she held down the tube that had entered her womb without any resistance, her fingers would simply slide on the slippery mucus covering it.

Whether it was juice she had leaked herself, or whether it was liquid secreted by the half-machine half-organism spider mecha, they were so mixed together that she could no longer tell which was which.

「I expected as muchh. But from now on, whenever you have the urge to, Senpai, Spider-chan will sense it and nudge you at all times, okay~.」

「I, I don’t need such a thing, or rather, how can I stop it?」

「I don’t know about such a thing. Once you get used to it, you will no longer be able to live without Spider-chan, after all. Take me for instance, Spider-chan will buzz about whenever I have free time, however short it is, and we do lewd things anywhere and anytime all day long.」

「That’s simply because you’re lewd…. Ahn, not good, it’s real bad…. Just why does it feel so good?!」

She licked her lips at the sight of her senior writhing around on the bed.

「Spider-chan not only helps you sexually, but also in many other ways, you know~. In return, you have to help them breed and protect their den, though… Huh, Senpai. Can you hear me?」

*Spurt spurt* From the depth of her thighs, twisted together and closed, the sound of water with high viscosity was echoing.

An undulation, which was vivid unlike that of adult toys such as rotors and vibrators, pried her genitals.

The tube, which was undulating freely in her vagina, precisely stimulated her erogenous zone.

「Not good, not good, this child is learning more and more. I’m cumming again… I’m cumming.」

「For the first three days or so, it will be thoroughly accumulating information about which way is good for you, you see.」

Even so, fundamentally, they were not existences that caused harm to people.

Although they sometimes got in the naughty mood due to the synchronization transmitted from the Guild during the mass production of control crystals, the underlying concept was coexistence with people.

To be helpful to people, such was the wish of their creators, after all.

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