The Magic of Science Class

The early morning at Norrent Castle was shattered by a piercing sound of wind.

At this moment, on the royal knight training ground behind the castle.

"I am not practicing anymore! This is so annoying!"

Aria threw the expensive staff inlaid with a hyacinth gemstone onto the ground and sat on the grass, puffing her cheeks in anger. "What is that dead old man teaching? 'The breath of the wind element', 'Listening to the whispers of nature'... I do not understand it at all! I am not an elf, where am I supposed to go to hear the wind speak!"

In front of her, several wooden dummies used for practice remained completely intact, with only a few blades of grass nearby swaying slightly in the breeze.

This was the result of her past few days—other than messing up her hair, it had absolutely no lethality.

"Giving up already?"

Holding a cup of hot soy milk that he ground himself, Lynch walked over leisurely. He was wearing a slim-fitting black trench coat, handpicked for him by Felsy, making him look exceptionally tall and capable.

"Teacher Lynch!"

Seeing her savior, Aria bounced up from the ground, looking aggrieved. "It is not that I want to give up, it is just that those theories are too mysterious! I just want to learn how to split that piece of wood, but that court mage insisted that I meditate for three days first!"

"Meditation is indeed useful, but it is used to raise your upper limit. For you right now, the efficiency is too low."

Lynch took a sip of soy milk, picked up the staff, and casually twirled it. "Aria, what do you think the wind is?"

"The wind? The wind is... flowing air?" Aria answered tentatively.

"Bingo."

Lynch snapped his fingers. "Since it is air, then it is matter. Since it is matter, then it follows the laws of physics."

"Laws of... physics?" Aria looked utterly bewildered.

"Watch closely."

Lynch did not chant those lengthy and obscure spells. He merely extended a finger, and a cluster of cyan wind elements gathered at his fingertip.

"A traditional wind blade relies on magic power to forcefully push the air, forming an impact. Although the range is large, the power is scattered."

"What we need to do is compress it."

Lynch's voice sounded like a rigorous physics teacher. "Compress a massive amount of air into an extremely thin plane, and then use the instantaneous high-pressure release to form cutting power."

"Simply put, it is the high-pressure application version of Bernoulli's principle!"

As his words fell.

Buzz!!!

The originally gentle cluster of wind elements suddenly began to vibrate violently, emitting a piercing buzzing sound. It was compressed at Lynch's fingertip into a crescent-shaped wind blade that was only as thick as a piece of paper, yet presented an eerie blue-black color.

"Go."

Lynch waved his hand casually.

Swish!

There was no howling gale.

Only an almost invisible afterimage flashed by.

Fifty meters away.

The ironwood training dummy, as thick as three people hugging it, did not even sway.

"Eh? Did it miss?" Aria blinked.

However, the next second.

Crack.

The upper half of that iron-hard wooden dummy slowly shifted, slid, and then crashed to the ground.

The cut was as smooth as a mirror, to the point where even the grain of the wood was polished.

"Hiss!!!"

Aria gasped, her eyes almost popping out of her head. "Is, is this a wind blade?! This is simply an invisible sword!"

"This is the power of science... oh no, the power of truth."

Lynch threw the staff back to her. "Stop thinking about listening to nature. Just think about how to compress the air, and compress it again! As long as the pressure is great enough, even a gentle breeze can cut through steel!"

"Pressure... compression..."

Holding the staff, the confusion in Aria's eyes vanished, replaced by a kind of fanaticism. "I think... I understand!"

...

Meanwhile.

In the shadowy corner of the training ground.

The old butler Sebas, whose codename was Old Ghost, was standing there like a phantom, still holding the pocket watch he had wiped ten thousand times.

His hands were trembling slightly.

"No chanting."

"No magic circle." "He even compressed the magic fluctuations to the extreme, only erupting at the moment of impact."

Sebas stared fixedly at the smooth cut on the wooden dummy, cold sweat sliding down his temples.

"This is assassination art! This is the highest level silent killing art of the Demon Realm!"

"This Lynch... is indeed no ordinary person. He is turning that innocent human young lady into a ruthless killing machine!"

"As expected of the Executor chosen by the Lady Witch! Not only are his methods ruthless, but... he is actually teaching this kind of killing technique to a human. Is he trying to disintegrate the future of humanity from within? Brilliant! Absolutely brilliant!"

Sebas took out a small notebook and recorded tremblingly: Observation Log: Lord Lynch is conducting brainwashing-style martial indoctrination on the heir of the Norrent family. It is expected that soon, Miss Aria will become a sharp blade we have planted among the human nobles.

...

In the afternoon.

After finishing the physics magic class for Aria, Lynch did not stay idle.

Because the system's Demon Lair Expansion quest had a time limit.

"Install three monitoring eyes within 48 hours... Is this system trying to make me a peeping tom?"

Although Lynch complained, his body was very honest.

He took out those Magic Energy Monitoring Eyes from his system backpack. These things looked like ordinary obsidian decorative spheres, only the size of a fist, engraved with obscure runes.

"Butler Sebas."

Lynch called out to the old butler who was about to pass by.

"Here! What are your orders, Lord Lynch?"

Sebas teleported over with a sliding step, bending his waist at a ninety-degree angle, his attitude so respectful that it made Lynch feel a little embarrassed.

"Well... I want to install a few of these things in key locations around the castle, such as above the chandelier in the hall, the corners of the corridors, and the main entrance."

Lynch handed the black sphere to him to look at. "This is called a panoramic recorder, which can record all the visual images of everything happening around it. It is mainly for... ahem, for the safety of the castle. In case there are thieves or assassins or something, we can discover them immediately."

Sebas took the black sphere with both hands, sensing the magic circuit inside that, although faint, was extremely precise and seemed capable of swallowing even light.

His pupils quaked.

"Panoramic recording? Monitoring everything?"

"Is... is this the simplified version of the legendary Eye of True Sight?!"

In the Demon Realm, only the Lord Demon King's palace was equipped with this kind of thing. That was an absolute ruling tool meant to control everything and eliminate betrayal!

And now, Lynch actually wanted to install these things all over Norrent Castle?

"Too ruthless!"

Sebas exclaimed in his heart. "He is trying to turn the entire castle into a cage with no blind spots! Under these eyes, Count Gael's every move, even how many pieces of paper he uses when going to the toilet, will be exposed to the Lady Witch's vision!"

"Is this the so-called nibbling away at the will? Starting by stripping away privacy, making humans live in the fear of being monitored, and ultimately completely submitting!"

"Understood! This old servant will go do it right away!"

Sebas raised his head, his eyes fanatical. "Rest assured, I will install them personally! I guarantee the angles will be tricky and highly concealed. There is absolutely no way those foolish humans will discover them!"

"Uh... there's no need to be so sneaky about it. Just install them out in the open," Lynch scratched his head. "Tell the Earl that this is a security system I'm gifting him, free of charge."

"Brilliant! Truly brilliant!" Sebas gave another mental thumbs-up. "Conducting surveillance openly under the guise of 'security'. This is an overt scheme! Making the humans put on their own shackles while feeling deeply grateful!"

...

Evening, Rose Courtyard.

The place had already been completely renovated by Lynch.

As another part of his system quest—Environment Modification—Lynch had set up a large-scale Magic Energy Temperature Control Array in the villa's basement.

The principle was actually quite simple. It utilized the energy collision of fire and water magic cores to produce a constant flow of heat, which was then transported to the various rooms through pipes.

To put it bluntly, it was central heating.

"Phew..."

Felsy, wearing a thin silk nightgown and stepping barefoot on the warm floor with a glass of red wine in her hand, let out a comfortable sigh.

"This is far too comfortable."

She looked at the still freezing night outside the window, while the interior of the house was as warm as spring. "Lynch, how exactly does that brain of yours work? To actually think of hiding the heat beneath the floorboards?"

"It's called underfloor heating."

Lynch was squatting on the ground adjusting a valve. Hearing his wife's praise, he turned back and smiled, "From now on, even if there's a blizzard outside, you'll be perfectly fine dancing in a skirt indoors."

"Who wants to dance for you?"

Felsy blushed slightly, but she couldn't suppress the corners of her mouth from curling up.

This kind of life... she had never enjoyed anything like it, even in the Demon King's Palace.

In the past, back in the Demon Realm, heating relied entirely on fireplaces or enduring the cold with one's own magic power. It was nothing like now, where every pore was enveloped in warmth.

"Knock, knock, knock."

A knocking sound came from outside the door.

"Lord Lynch, Madam. Dinner is ready."

It was Sebas's voice.

"Come in," Lynch called out.

The door was pushed open.

Sebas walked in pushing a dining cart.

However, the moment he stepped into the villa, this old demon with Tier 5 strength felt like butter thrown into an oven; he felt terrible all over.

Hot.

It wasn't just a normal, dry heat.

It was a kind of... environment filled with high concentrations of fire elements, as if he were standing in a lava purgatory!

Because Lynch, in order to make his wife comfortable, had turned the underfloor heating up to 28 degrees Celsius, and he was using high-purity Tier 3 fire magic cores as the energy source. This magic-rich heatwave was practically environmental assimilation for a demon accustomed to the cold and dark.

"This... this temperature..."

Sebas secretly wiped his sweat while serving the dishes, his heart churning with shock.

"Could it be... Lady Witch finds the environment of the human world too cold, so she has begun to alter the climate?!"

"Is she transforming this villa into a 'Scorched Earth Domain' suitable for the survival of high-tier demons?!"

"Good heavens! This is only the first step! Is the next step to turn the entire Shattered Gold Town into a volcanic lava landscape?!"

He secretly glanced at Felsy sitting on the sofa.

He saw the terrifying Lady Witch currently bathing in this purgatory heatwave with a look of pure enjoyment. As if it still wasn't hot enough, she stretched out her fair, long legs and dangled them in the air.

"As expected!"

"Lady Witch is using this method to recover her terrifying power that was suppressed by the human world!"

"Once this 'Scorched Earth Domain' is fully formed... it will be the time of the Norent family's demise!"

"Butler Sebas?"

Felsy suddenly spoke, her voice lazy. "Are you hot? Why are you sweating so much?"

"N-No!"

Sebas trembled all over and hastily bowed even lower. "I... I am just excited! To be able to serve... ahem, to serve by your sides, my blood boils with passion!"

"Oh, that's good then."

Felsy nodded faintly. "The steak today is quite nice, thank the chef for me."

"Yes! Thank you for the praise, Madam!"

Sebas felt as if he had been granted amnesty and retreated as if fleeing for his life.

It wasn't until he closed the door and stood in the freezing corridor, blown by the cold wind, that he finally felt like he had come back to life.

"Too terrifying..."

Sebas leaned against the wall, panting heavily. "That Lynch... to actually be able to chat and laugh so casually in such purgatory-like high temperatures, and even wearing a sweater?"

"This boy... is terrifyingly powerful! He is absolutely a demonkin with some sort of fire immunity physique!"

...

Inside the room.

Lynch looked at Sebas's fleeing figure, feeling somewhat puzzled.

"Is this butler's body that weak? Sweating so much at just 28 degrees?"

"Probably because he's getting old."

Felsy took a sip of red wine and said dismissively, "Who cares about him. Lynch, come here."

"What's up?"

"This underfloor heating really is comfortable..."

Felsy set down her wine glass, looking at him with hazy eyes, and gently beckoned with her finger. "Didn't you say... you were going to teach me how to dance?"

Lynch's Adam's apple bobbed.

He looked at his incredibly charming wife under the light, wearing a nightgown, her eyes practically drawing strings of affection.

System quests? Demon lair construction?

To hell with them!

Right now, he only wanted to do something more meaningful.

"Coming, honey!"

Lynch pounced forward.

...

That night, the Norent Castle was very quiet.

But in the journal of the old butler Sebas, this night was destined to be a sleepless one.

[Demon Calendar Year 784, Spring.]

[Lady Witch and her Executor, Lynch, have successfully invaded Norent Castle.]

[Omnidirectional Surveillance Barrier (Demon Eye) has been deployed.]

[Scorched Earth Domain (Environment Modification) has been initiated.]

[The human heir is undergoing brainwashing-style slaughter education.]

[The grand revival plan... is advancing methodically! I, your old servant Sebas, am willing to burn my last remaining physical shell for Lady Witch's hegemony!]

Having written the last word, the old butler closed the diary. Gazing at the several surveillance cameras flashing red lights outside the window, he revealed a sinister yet gratified smile.

"Tremble, humans."

Although the battle between Lady Witch and the Holy Son of the Eternal Radiant Moon seemed to be a mutual loss.

However now, Lady Witch had returned with her invincible proxy!

This meant that the Demon Race would flourish from now on, while the Church, left leaderless and plagued by treacherous villains, clearly had no future.

The only thing that left Sebas feeling confused was why it felt like Lady Witch's demeanor when she was beside Lynch... was a bit too soft and clingy.

It was almost as if she had swapped personalities from before.

It seemed her heart had undergone a subtle change.