— — — — — —
"Alright, time for class."
"Tohru, since it's your first time, just stick with me today and watch from the side."
After Kazuma and the others finished eating and wrapped up everything else, they headed out for today's Ishiyama High "teaching session."
"Okay!" Tohru nodded eagerly, her tail swishing every which way. Clearly, she was very excited about all this.
"Teaching? Letting a barbaric dragon species teach? I can't even imagine what that would look like," Hilda muttered.
And just like that, Tohru and Hilda were bickering again. These two were truly born incompatible.
"Come on, Beel, let's ignore them."
Kazuma scooped up baby Beel and walked off, heading back to the classroom with the chairs. He set the kid on the desk, then settled into his totally-for-show "teacher" role.
"Kazuma, wait for me!"
"Master, wait for Hilda as well!"
Tohru and Hilda rushed in right after him, each taking a side and glaring daggers at the other.
"Hey. You two at the front, stand up."
Kazuma pointed at the two delinquent boys sitting closest to him.
"Eh? W–We didn't do anything, man!"
They shot to their feet, terrified. They really hadn't done or said anything. Surely they weren't getting beaten just for sitting in the front row, right? That'd be insane!
"Relax, I'm not hitting you. We're just short on chairs. Hand yours over."
He took their chairs and passed them to Tohru and Hilda. As for the now-chairless delinquents—
"I'm sitting in the back next time, I swear!"
"Uuugh..."
They were on the verge of tears. They couldn't win in a fight, and arguing was pointless, so all they could do was endure.
At first, the delinquents were stiff with fear, praying they wouldn't get hit. But as time passed and nothing happened, they loosened up, and the thoughts started spilling out.
"Those two blonde chicks—are they Kazuma's girlfriends?"
"What the hell, man! Why him? Looks-wise I'm way better!"
"And what's with the tiny baby standing on the desk acting like he owns the place?!"
"Is that Kazuma's kid?!"
"Who brings a baby to school?! And I swear that brat glared at me earlier! Why's he so fierce?!"
"And how long is this class gonna stay silent? This is torture! I'm dying here!"
The complaints just kept piling up. There was simply too much to be confused about. What was this teacher even planning today?
"Man, this is boring."
Kazuma was feeling bored himself. His eyes drifted around before landing on the chalk on his desk.
He grabbed a piece, glanced at the rows of heads in front of him, and suddenly felt the urge to practice target shooting.
The delinquents instantly felt a chill crawl up their spines.
"…Nah, let's test the strength on the wall first."
With a flick of his wrist, he threw the chalk. In an instant, the back wall blew open with a huge crater. The chalk shattered into dust.
"AAAAH!"
Cold sweat poured down the students' faces. What did he just throw?! Chalk or a grenade?! Why was its power like that?!
And he'd been staring at their heads earlier—with the chalk in hand. Was he planning to throw it at them before changing his mind?!
"Too much force," Kazuma muttered.
He picked up another piece and threw again. This time the crater was smaller—but the chalk still exploded into powder.
"Chalk's too fragile… but I can probably reinforce it with natural energy so it won't break."
Kazuma focused. In his senses, natural energy expanded—tiny grains becoming large, clear orbs.
BAM!
He threw again. This time the force condensed cleanly. The chalk pierced the wall, shot into the next classroom, punched through another wall, then a third, before finally stopping.
The chalk was completely intact.
"Wow! Amazing!" Tohru jumped up clapping, tail wagging happily. She genuinely thought it was incredible—controlling strength that precisely. If it were her, she'd probably have obliterated the entire wall.
"Bravo, truly incredible, Master!" Hilda joined in, clapping hard. As a human, Kazuma was honestly terrifying. One throw of fragile chalk, and it turned into a weapon that could pierce buildings.
And that was without magic. If he added magic, how much more monstrous would he be? No wonder he dared to talk about challenging the Demon Lord. In the human world, he was practically invincible.
"Big sis, please, stop cheering… We're gonna wet ourselves, you know!"
"What's so great about that?! He's clearly threatening us!"
"The holes he made are exactly head-sized! The next 'crater' might not be in the wall—but in our heads!"
The delinquents were beyond terrified now, drenched in sweat. Someone actually let out a whimper. Forget finishing class—would they even make it out alive today?!
"This is actually pretty fun. No wonder teachers like throwing chalk."
Kazuma decided this was a great way to train energy control. Good practice and good entertainment.
"Dada~"
Baby Beel grabbed a piece of chalk from the box and mimicked Kazuma, giving it a firm toss.
His chalk didn't have anywhere near Kazuma's power. It wobbled through the air and bonked the nearest delinquent right in the chest.
"Little master, amazing! Brilliant throw! Perfect form!" Hilda leaped to her feet and applauded like a lunatic, praise spilling out of her nonstop. She couldn't even hide how delighted she was.
"And you, lowly human. Our baby master hit you, so why didn't you fall over? Are you tired of living?"
Before the delinquent could react, Hilda was in front of him with her broken sword pressed against his neck, murderous intent radiating from her eyes.
"A-Ah! I—I'm falling! He's so strong! Amazing! I'm dying right now… Tell Mom it was me who stole the money for the adult magazines—not Dad."
The delinquent's brain, which hadn't worked properly in years, suddenly kicked into overdrive. For a split second he felt like Einstein had blessed him. He instantly figured out the survival route and dropped to the floor with Oscar-tier acting, writhing dramatically and howling.
No technique, only raw terror. He was scared half to death. Why did everyone around this teacher resort to murder at the smallest slight? Just because he didn't react fast enough he had to die? Were these people demons?!
"And you all!" Hilda turned toward the other students, face darkening. "Why aren't you clapping? Was the throw not good enough? Do you want to die?"
She swept her hand. A burst of sword aura sliced open the wall beside her, tore through the outer wall and shot straight into the sky.
Instantly, applause broke out like machine-gun fire.
"G-great! Amazing! Baby Master is incredible! Clap clap clap!"
The delinquents looked at Hilda and felt as if a real demon had reached for their throats.
Baby Beel, meanwhile, was having the time of his life, kicking his legs happily on the desk and tapping around with his tiny feet.
"Da-dada-da."
"..."
"This is insane… These two blonde chicks are just as unreasonable as their boyfriend!"
"They look pretty but they're way too dangerous! Who the hell puts a sword to someone's neck over applause?!"
"That was a real sword. I saw a line of blood on that guy's neck!"
The delinquents were losing their minds. Was there not a single normal person around this guy?
The first blonde girl had thrown all of them out of the building on her very first day. The second blonde girl was now holding a sword to their throats and threatening them into cheering. And even the baby wasn't normal. What kind of baby laughs this happily while witnessing near-murder?
"I really don't wanna go to this damn school anymore. But if I skip class I'll probably get beaten to death…"
Every delinquent silently prayed for the bell to ring so they could escape with their lives.
"These creatures are ignorant," Hilda said, looking them over thoughtfully, "but with proper training, they could make decent servants for my master."
She decided then and there: she would become a teacher too. Conquering humanity begins with conquering this school.
"I want to be a teacher as well, Kazuma-sama. My plan for human domination should start with taking control of this school."
Calling Kazuma "Sama" had become natural for her. At first she resisted, but repeated use had worn her down.
"Sounds good. Approved."
Kazuma nodded and tossed another piece of chalk. The power was even more precise this time. It still pierced the wall clean through.
"Very well." Hilda returned to her seat, already planning how to properly brainwash the student body.
And the principal? To Hilda, Kazuma was obviously the ruler of this school. Someone this strong wasn't ruling? Impossible. What, was that old gardener from the courtyard the real boss?
---
Meanwhile, downstairs on the first-year floor…
"What the hell are you idiots doing? It's broad daylight and none of you are out fighting? You're sitting in class like actual good students?"
"You messing with me? Dropping the delinquent act now? You wanna be honor students or some shit? Dammit, if you wanna be good kids, get out of this school!"
"This is Ishiyama High! The most brutal, most terrifying, most violent school with a delinquency rate of one hundred forty percent! You hear me?!"
One of the Four Tōhōshinki of the school, the so-called De Niro Kanzaki, Hajime Kanzaki, had returned.
The moment he entered, Kanzaki knew something was wrong. The usually chaotic hallways were empty. No yelling, no fighting. The silence was like a graveyard.
He and his crew peeked through the window of a first-year classroom and saw the unthinkable. The delinquents inside were sitting quietly at their desks like model students.
His rage spiked.
"I'm out there fighting punks from Gintama High while you idiots play good boys?! This year's first-years are all trash! Get up!"
He stormed into the room and began kicking over desks and chairs, booting every delinquent across the floor one by one.
"Ishiyama High students studying seriously… I thought I walked into the wrong school."
"This is… no, this isn't funny. It's actually kinda scary."
Shintaro Natsume checked a few other classrooms. When he returned, his expression had twisted into something between confusion and horror.
The obedient students gave him chills.
"Let's go. Check second-years." Kanzaki marched to the second floor. Same sight. His anger spiked again. First-years were one thing, but second-years too? Were they cursed?
"Hey. What the hell happened in this school?" He grabbed a delinquent by the shirt and demanded answers.
"K-Kanzaki boss, it's not our fault, I swear! A super terrifying new teacher showed up!"
"First day here he beat every one of us senseless! Half the school's still in the hospital!"
The student blurted everything out.
"What stupid terrifying teacher? He thinks he can cause trouble while I'm gone?! All of you, first-years, second-years, third-years… useless! Can't even handle one teacher."
"Don't tell anyone you're from Ishiyama High. It's embarrassing."
He tossed the kid aside and stormed up to the third floor. Seeing the third-years acting the same way made his temper explode. He punched them around first, then grabbed one for interrogation.
"Where's this 'new teacher'?"
"H-He's over there, but Kanzaki boss… he's really scary. Please be careful!"
"Scary? I've never known the meaning of fear in my whole damn life."
Kanzaki threw the guy down and marched straight to Kazuma's classroom with his followers behind him.
The moment he opened the door, he froze.
Inside, the new teacher casually flicked a piece of chalk. The chalk tore through the wall like a cannon shot. Then the next wall. Then the next. It kept going in a straight line, punching through every barrier before vanishing outside.
"You need something?" Kazuma looked over at the suddenly-opened door. Moments earlier, he'd been experimenting with shifting the properties of natural energy. Instead of reinforcing the chalk, he'd adjusted it for maximum destructive output. Same energy, different intention, completely different results.
"No. N-nothing, sir."
Kanzaki gently closed the door, then stood outside staring at it for a long time. He finally turned to his boys. "That guy… is the new teacher?"
"Y-yeah, boss. Never seen him before, not a third-year. Gotta be him."
"And he's sitting in the teacher's seat, so… yeah."
Kanzaki swallowed. "Did I… hallucinate? Did he just throw chalk and blow up the wall?"
"You didn't imagine it, boss. That really happened."
"…So do we still plan to fight him?" one of the underlings asked carefully.
.
.
.