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Chapter 3 - A Teacher Created for Sin

"You can call me Miss Shirakawa. Mr. Sato had a family emergency, so I'll be taking over the class for a while. I hope we get along well and you don't give me too much trouble." she said flashing them a radiant smile.

The whole classroom seemed to let out a sigh.

In the back row, the guys were nudging each other and exchanging euphoric looks, with their eyes shining.

The change was massive: they had gone from putting up with that bitter old man Sato to having that spectacular goddess in front of them.

Without a doubt, they had just won the lottery.

'Miwa... Miwa... Miwa.... Miwa Shirakawa…'

Jin repeated the name in his mind, chewing on it.

It felt fucking familiar.... Too familiar!

And it wasn't just the name, that body was a goddamn magnet for men. Those curves that should be impossible and that massive rack fit perfectly with the standard of "mothers" in the most depraved Hentai stories.

She was a woman genetically designed for sin.

He would have to watch her very closely from now on.

Of course, strictly for business.

A woman like that is a beacon for predators, perverts, and scum. And for him, that scum were experience piñatas.

If he stayed close to her, surely some dyed-blond would show up that he could destroy to farm rewards from the System.

Yeah... that was the only reason. He was only doing it for the points.

Definitely.

"Alright, cut the chatter and let's get to work." said Miwa, opening her notes, "Open your books. Since you have the entrance exams right around the corner, I'm going to skip the filler and go straight to the syllabus."

She leaned on the desk and looked at the class.

"Page five. Year 1600. The meteor event. That was ground zero, the exact moment when radiation brought Mana and awakened spiritual power in humanity."

She paused to make sure everyone was taking notes.

"Mark it in red, put neon on it, or tattoo it on your forehead if you have to. I guarantee that date is going to be on the exam for sure, so those are free points. I don't want to see anyone failing that...."

The history of this world was an exact copy of the Earth Jin knew... until the year 1600. That was the breaking point.

It was then that a meteor crashed into the planet. But instead of bringing fire and extinction, it brought something much more volatile: an unknown cosmic radiation that scientists ended up christening as "Mana".

That energy infected the atmosphere and rewrote the rules of nature. Humanity didn't just evolve, it mutated.

But the meteor's radiation wasn't equitable. Part of humanity got lucky: they kept their appearance and simply awakened spiritual powers. But the rest and certain animals... suffered a brutal genetic mutation.

They transformed into peculiar species from old mythologies: elves, beastmen, vampires, youkai...

Centuries of conflict shaped the new world order, dividing it into two irreconcilable sides.

On one side, the Sub-human Alliance, the bloc where all those mutant races grouped together.

On the other, after years of chaos and anarchy, the Human Union emerged. A common front led by the military superpowers, the United States, the European Union, Russia and China, to prevent the extinction of our species.

And Japan, where Jin lived, of course, stood firm as part of this Union.

'I have to push myself to get strong, who knows what kind of things will show up', Jin thought while listening to the lecture.

Miwa's voice was hypnotic. It had that soft cadence that managed to get a group of hormonal teenagers to pay attention to a history class.

When the bell rang, breaking the spell, no one jumped up. All the male gazes remained glued to her rear, tracking the movement of her hips as she left the classroom.

"Fuck, I wish she taught us all year..."

"You said it."

"As for me, old man Sato can take a permanent vacation."

If that poor bastard Sato knew that his "dear students" were actively praying for him never to return, he'd probably have a heart attack right there.

The rest of the morning dragged on in a haze of boredom compared to that first period. Two soporific classes later, the bell rang again, finally announcing lunch time.

Jin pulled the Tupperware Mira had prepared for him with obsessive dedication out of his backpack and next to him, Natsuha already had her own food spread out on the table.

"Hey, Jin-kun", she said leaning in enough to invade his space and sliding her container toward him, "I'm trying to watch my figure and my mom went overboard with the amount today. Do you mind giving me a hand and eating part of this?"

"..."

Jin stared into the container: prime steak fillets, roasted potatoes, side dishes...

'Fuck, she was right.'

That was an absurd calorie bomb for a girl who was supposedly on a diet.

"Sure, no problem" he replied with a smile, accepting the free food without thinking twice.

He was so busy evaluating the food that he didn't notice the glint of triumph that crossed Natsuha's eyes.

...

When they finished eating, Jin leaned back in his chair and let out a sigh of absolute satisfaction.

"Seriously, tell your mom she's a genius in the kitchen. That was killer."

Natsuha gave him a radiant smile.

"I'll tell her" she said sweetly, "Although the omelet Mira-san prepared isn't far behind either, it was delicious."

Suddenly, Jin stood up, making Natsuha jump and look up, curious.

"I'm going to the vending machines for water, I'm dying of thirst" he said. But before taking a step, he stopped and looked at her, "Do you want me to bring you a juice?"

"... Y-Yes, please!" Natsuha nodded, trying to keep her composure.

But as soon as he turned his back on her and walked away, her calm girl mask shattered.

She brought her hands to her cheeks, which were burning like embers, and felt a rush of adrenaline.

'He remembers!', she thought, on the verge of an emotional breakdown, 'I didn't even have to ask him, he remembers perfectly what I like to drink! Oh my God, he notices the details! That's an unmistakable sign, he really cares about me!'

...

The vending machines were strategically located near the main classroom building. Jin got his water bottle and the juice, picked up the drinks from the metal tray, and started his way back to class.

But at that instant, a short guy, with bangs so long they covered half his face and radiating some fucking shady vibes, walked past him.

And immediately, a red screen exploded in front of Jin.

[ALERT! Threat Scanner has detected a hostile signature.]

[Target Type: Forbidden Ability User.]

"Huh?"

Stopping dead in his tracks, he frowned as he watched the figure walk away.

He had gotten that tracking ability last year after beating the shit out of a gang of child molesters.

It worked like a proximity radar: if someone with "evil" abilities entered his ten-meter radius, the alarm went off.

And it didn't just detect anything.

The scanner specified the worst shit imaginable: Brainwashing, Hypnosis, Time Paralysis... Basically, the complete toolkit of a rapist in Hentai.

'But that's weird...' he thought analyzing the situation.

He had inspected every inch of the school and the neighborhood a thousand times since he got the power and nothing had ever popped up.

And that left only two options: either that sinister runt was new to the school, or he had just "awakened" his powers, like the typical virgin protagonist who suddenly becomes a public danger.

"Let's see who the fuck you are..."

Without hesitating, he sped up his pace and started following him.

....

The boy's name was Wataru Morishita, someone who once had what anyone would call a perfect life.

But everything went to shit in middle school.

His father's business went bankrupt and he didn't know how to take the hit. Instead of looking for a solution, he broke completely and decided to drown his failure in bottles of alcohol.

His mother couldn't stand the hell. She packed her bags, signed the divorce papers, and fled to save her own skin, leaving him behind to rot alone with the monster.

From that day on, Wataru's existence turned into a nightmare.

Coming home didn't mean resting, it meant entering a battlefield where he was the punching bag. His father unloaded all his anger and frustration with punches, using him to vent every goddamn night.

Wataru lived in that state of numbness, crawling through the days like a walking corpse, insensitive to pain... until he met her.

Until he crossed paths with the teacher Miwa Shirakawa.

When Miwa discovered the hell he was living at home, she didn't limit herself to giving empty advice.

She sat with him, listened to him, and offered him the comfort no one else had given him in years.

But in Wataru's mind, that kindness got distorted. She stopped being an authority figure and became the center of his universe.

It wasn't just admiration.

It was a need.

The mix of her maternal sweetness with that devastating physique, those obscene curves that screamed sex and that unreachable beauty fried his brain.

He spent his nights imagining her, consumed by an obsession that oscillated between religious adoration and the dirtiest lust.

Last week, unable to hold back anymore, he made the mistake of confessing.

It was pathetic.

She rejected him, of course. She did it with tact, trying not to hurt him, but the message was clear: a loser like him, a sewer rat, could never touch a goddess.

"Trash... that's what I am" he muttered, feeling the hate bubbling in his stomach.

But that was before... Now everything had changed.

Ignoring the looks of disgust from the students passing by him in the hallway, Wataru let out a perverse laugh, and took the phone out of his pocket, pressed against his heart.

The screen lit up, bathing his face in a blood-red glow.

There were no icons, no menu, no clock. Only a minimalist and sinister interface with blinking text:

[Hypnosis App]

[Installation complete]

[OFF]

He had found the app a few days ago on a forum. At first he thought it was trash, cheap malware. But desperation led him to try it.

His guinea pig was his own father.

He still remembered the feeling of power when he activated the app and watched the old drunk's eyes go blank.

The euphoria he felt upon ordering him to stay still and using him as a punching bag, returning every blow, every insult and every year of misery until leaving him unconscious on the kitchen floor, was the best drug he had ever tasted in his life.

IT WAS REAL!

He started climbing the stairs toward the rooftop, while adrenaline burned in his veins.

'She's mine!', his mind screamed, over and over again, with a manic cadence, 'No more being the good boy! Shirakawa-sensei is mine, fuck, SHE'S MINE!'

Everything was ready.

He had managed to convince her to meet him on the rooftop at noon with the excuse of talking about his "family problems" and she, so sweet and naive, had fallen right into the trap.

________

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