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"So how does this work?" Sera asked me as we were standing in the new room meant only for the core.
It was another floor below.
So, with two floors underneath, my garage has finally reached the next stage.
"We are going to mark the areas as this could theoretically cover the whole globe," I said with a thoughtful look.
"It could?" She squeaked out with disbelief as she stared intently at the core.
"I said theoretically, the diamond size is too small for that. At most, it would only be able to cover the whole nation. But, I am only going to focus on my town.
Anyways, there are three layers to it. First is the recon which covers the whole city. Then the in-depth observation which covers the entire block we are in right now, and the core security which is my garage. This means that you can't just teleport in, you can't even use magic if you don't have the permission. And most importantly, it will all be connected to the garage's structural integrity.
Which means it can reinforce the walls, power the tech inside of it. And it's also going to last as long as the diamond lasts."
"And how many years is that?" She asked him, trying to remember how long diamonds last…
"If it was exposed to the weather conditions of the outside world it would last for 3 to 4 billion years, but since it is fully encased and the case itself is powered by the very same magic… it would last pretty much forever since the core can just last that long," I explained the loop of my barrier core.
"But… the diamond is only… Wait!!! Those circles! They send specific magic which keeps the garage in pristine condition!" She said with realisation. Her gaze went to the diamond in the middle of the room and saw the cables attached to the whole thing.
"All that from a single stroke of finger… beautiful isn't it?" I said that while staring at the Diamond core in the middle of the room. Even with the case, the white particles were still appearing. That just shows how much power the core was generating. Unlike my previous attempt which had killed me. This time I have put shackles everywhere. No more one silly miscalculations. And best of all, the computers were not needed for anything. As I did all that with a regular calculator.
"Yes… quite terrifying…" Sera said as she looked on with disbelief at the diamond core.
"Now that this is done, time for the hardest part," I said with a resigned sigh.
"...The hardest part? There is more!?" She quickly snapped out of her reverie and stared at me in shock.
"Yeah. We are going to place boundary markings around the city… Do you know what this means?" I asked her seriously.
"We... are going to leave the garage?" She tried to understand what I meant.
"Exactly! Nonetheless… This is a must! So, we are going to have to leave my garage…"
"You don't want to go outside?" Sera asked with a baffled look.
"I don't want to go when it's not necessarily needed. I find it a waste of time unless I am doing field research." I explained to her, while I am not a hikikomori, I don't like wasting time outside for pointless things.
I have seen most of the world and had several of my garages all around the globe.
"Then think of this as a field expedition, sometimes leaving your garage is good for you. You never know, you might just get a spark of inspiration." She said the last part with a smile.
…
…
…
I thought about it for a second. It was only a few moments but Serafall was already fiddling around, waiting for the answer.
"Hmm...I guess you are right. I knew I had chosen wisely when I had chosen you as my second pillar." I said that with a proud nod.
"Hmph! Don't forget that I am a devil with several hundred years of experience!" She said that quite proudly.
"And also got educated by a 13-year-old boy in magic," I said with an eye roll.
Sera quickly deflated after hearing that.
"Right…"
~~~
After the activation of the barriers, Marcus' pace truly exploded. For Serafall though, it was just like a blur. As someone who has a long lifespan, she doesn't have the urge to rapidly do things or be in a hurry.
But her Master thought differently, the black-haired Satan saw how rapidly things were changing in his garage.
One day she had appeared in his workplace just to see it at least twice as big. The floors have been laid down with tiles, the day after that she saw the walls redone, repainted in a soft blue accent… then the day after, the lighting was redone… There was now a unique chandelier placed in the main working area.
The progress of his workshop was monumental, especially for a human who was not even using any devil magic! She can't remember the last time she truly helped him!
While she was more than disappointed and even annoyed at herself, Serafall didn't give up; she knows that there will come a time where she will be able to truly help.
And so, days turned into weeks and weeks turned into months.
The Black-haired devil lady saw several futuristic furniture making its appearance including a table with a long bent computer screen which Serafall was sure Ajuka would gladly visit this place for.
Then she saw… holograms starting to appear on a pool-like table slightly away from the computer. It was quite big and she already knew what it was for…
Designing… she already saw him programming the thing. By this point, she understood that calling him just a monster or genius is far too disrespectful…
She needs to find a proper term for him...
The hologram technology was still something devils themselves were working on, Ajuka doesn't focus on them as he does whatever he pleases. But, if he is to see it from this perspective then he might have invested more time into it.
"What do you think?" Marcus asked her as he noticed Serafall's arrival.
The black-haired Satan looked around. "Hmm, you should get some paintings. I can assume that the majority of that place will be used for cars?" She pointed at the large empty area in the middle of the workshop.
"Probably… most likely, while the walls won't be like that for long since I am thinking of putting my 'scale mails' there." He said that last part with a smirk as he saw her reaction.
"Oh? I see… the foundations you talked about… this was it… wasn't it? You needed better tools and equipment…" She said with realisation. She looked around with even more curiosity.
"Indeed. Although, the first few models would not be as amazing as Boosted Gear or Divine Dividing." He said with a somewhat pained look, he didn't like that those relics, from the previous generation, were still better than anything he could make as of right now.
"Says the guy who created a Diamond Core that can just last forever as 'something interesting', I'd stopped caring about that part." Serafall just shook her head and looked at him deadpan.
"Well… I thought you guys have this kind of stuff in your mansion." He said as an excuse while shrugging at her.
"Right… I checked the barrier core in the Sitri household. It's barely the size of my palm and it was just based on some sort of pearl. It is quite fragile compared to your glowing-particles dispensing diamond core!" She said with an eye roll.
"Well, I suppose that's good then." He said while looking at her, his eyes wandered on her body for a second.
Seeing his reaction, Serafall slightly smiled… But her inner smile was more akin to that of a Cheshire cat, grinning from ear to ear. She was waiting for this moment!!!
As time progressed she started to dress slightly more revealingly. Not too much though, as she doesn't want her 'plot' to be discovered so fast.
But, this was good. Finally, her Master has started paying attention to her!
"It is." She said while changing how she was holding herself. Nothing too obvious though.
Her Master continued explaining how he will progress his scale mails and how he will get to the point of Boosted Gear and Divine Dividing. But, at this point, Serafall wasn't listening attentively.
Nope. She was paying more attention as to where his eyes were wandering. Was it her breasts or her hips? Or her ass? This way she would be able to identify what he truly likes and adjust herself to it.
She is a devil after all. A being of sin. The black-haired devil lady will duly adjust to her Master's likes.
Eventually, the explanations were over and Serafall used that moment to push her Master onto the couch.
The beauty ended up sitting on his lap while facing opposite to him.
Internally she was smiling at this, Ars Goetia didn't respond at all. Meaning that her Master allowed her to push him onto a couch like this.
She then pressed her shapely breasts onto his chest.
"It would seem you can finally enjoy the real perks of your Ars Goetia, Master~~~" Serafall said with a husky voice. Oh, she waited over a year for this.
If only the Underworld knew that their Satan Leviathan is head over heels for a mere 14-year-old boy…. Well, Marcus doesn't look like a boy at all. Since he had been training in magic when he was only 11, by the time Marcus had reached 14 his body was already in peak perfect condition.
And Serafall can attest to that. She loves to watch him work without his top shirt. Summer was the best time of year! Well, at least until her Master decided to build air-conditioners.
The current Leviathan never told him. But, she secretly turns it off sometimes…
After all, she can't lie, but she can still keep her mouth shut unless she is commanded to speak.
"Having a harem of 72 women?" He asked with a somewhat baffled look, he had never thought about such a ridiculous idea before!
"That too! But the real perk is that you can have me~~~ anyway you want~~~" She said that while taking his right hand and bringing it up to her chest while his other hand went to her great ass.
"I was thinking about rewarding you. You have no idea how jealous Satan Lucifer was about my paperwork speed. He even sends spies to find out how I am doing it." Serafall said with a giggling tone but her eyes were telling a completely different thing. She was horny… like really horny…
Inventions / Technology / Sacred Gears
M.T.M (Motion to Magic) Castor MK II
A magic-casting (shooting) device shaped like a handgun.
Classification:
Pseudo Low-Medium Sacred Gear composed of 37 magic circles fused into a single system.
Composition:
The outer casing is made entirely of titanium.
The internal structure consists solely of magic circles, enclosed within a barrier magic system to prevent heat from affecting the metal.
(Marcus theorizes that magic power deforms the metal rather than heat, as titanium is highly heat-resistant under normal conditions.)
Key Magic Techniques:
Basic M.T.M Technique: Uses a magic circle to capture motion, convert it into energy, and then transform that energy into magic. Even regular humans can use this weapon—simply by pulling the trigger.
Basic Barrier Rail Technique: Utilizes barriers as rails, enhanced by acceleration circles. The blast builds up force along the rail, increasing in power the longer it travels.
Mass Signing Work Simplifying Machine (Signer)
An electronic device designed to expedite document signing.
Classification:
A futuristic item featuring basic AI, unlikely to appear in the human market before 2025.
Composition:
Constructed from transmuted materials such as plastic, metal, and rubber.
More durable than conventional office equipment.
Technology:
Basic AI: Capable of sorting text by detecting keywords in specific sections of documents, simplifying the reading process for users.
Diamond Core Heart
A magically powered reactor core capable of supplying energy to an entire city—or even an entire nation.
Classification:
Magic Reactor / Magic System
Composition:
Made from transmuted diamond (far superior to any naturally occurring diamond on Earth), engraved with magic for enhanced durability.
Composed of 428 magic circles written in 14 distinct sets of runic letters.
Key Magic Techniques:
Basic Ownership System: Tied exclusively to Marcus, allowing him to control access to his garage and house.
Advanced M.T.M Technique: Unlike the basic M.T.M system, this technique amplifies motion repeatedly through multiple acceleration circles, making it exponentially more powerful.
Loop-Based Reactor: Magic circulates continuously through boosting magic circles, generating energy in a self-sustaining loop while sending excess energy to power the garage.
Triple-Layer Barrier Surveillance:
First Layer: Base surveillance—ignores individuals below a certain magic level but detects non-human magic signatures.
Second Layer: In-depth observation—allows Marcus to monitor people via magic.
Third Layer: Interior security—prevents teleportation or magic usage within the garage, functioning as a force field.
In emergencies, the second and third layers can solidify into diamond barriers, rendering them impenetrable.
Neutral-Type Magic Emission: The reactor emits a neutral magical field that only nature-sensitive beings can detect.
Marcus' PC
A custom-built computer using transmuted materials, constantly upgraded to meet Marcus' needs.
Classification:
A futuristic PC, based on Marcus' recollections of 2030 technology.
Composition:
All components are made from transmuted materials, offering superior durability.
Hardware is continuously improved at Marcus' discretion.
Technology:
Shackled AI-Based OS: An operating system that evolves based on user needs.
50-Inch 8K Curved Screen: Designed to Marcus' specifications, optimized for future technological projects.
Custom Keyboard: A specialized keyboard designed exclusively for programming.
Voice Recognition System: Captures and analyzes Marcus' voice to improve the OS.
Hard Light Holographic Display (HLHD)
A holographic design table for advanced visualization, including magical designs.
Classification:
A futuristic designer's tool.
Composition:
Constructed from transmuted materials for enhanced durability.
Technology:
Basic Hard Light Holographic Display v1.0: Allows the creation of solid light constructs directly on the table.
Cross-Information Sharing: Enables seamless data transfer between the holographic table and a PC.
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