Anti-NTR Man: Tomboy Sister Bully

[Background Music: Fleetwood Mac - Tusk (2018)]

"H-He… he broke his wrist!!" one muttered, his voice trembling as he watched the limb twist beyond its limits. The other bully grew pale, clutching his stomach, the sight making him queasy.

"What…!? He wasn't that strong before!! He was just some damn punching bag!" the second one spat, disbelief flooding his voice.

Outside the bathroom, whispers and murmurs from curious onlookers echoed.

"Holy shit… they're really going at that bastard," one bystander said, voice filled with excitement.

"Serves him right. That fucking Yuuto thinks he can mess with young girls and walk away clean!?" another sneered, vindictive satisfaction clear in his tone.

"Karma's a bitch, huh? Let's bounce before a teacher catches us lingering."

"Will they…?" one laughed, his voice trailing off with a mischievous giggle.

"Bro, I'm not taking any chances. Let's move."

"Party pooper," another shrugged, walking away from the scene.

Back inside the bathroom…

"H-How!? How the hell...!" the student with the twisted wrist screamed, eyes wide in terror. "You're just some weak bastard!!"

'True, this body is weak.' Yuuto's cold gaze flicked down to his own body. 'Even weaker than the usual, this one never even trained a day in his life. One well-placed slap can take me down. But none of that matters if they can't get a hit in. And, well, strength is overrated...'

Yuuto swiped the student's leg, forcing him onto his knees. With a calculated motion, Yuuto jerked the arm back, his grip unyielding. Then, leaning his full weight onto the bully's hyperextended elbow, he pressed down hard, forcing the joint to bend in an unnatural direction. The bully let out a strangled scream as his arm contorted, his body helpless under the pressure, pinned by Yuuto's relentless hold.

'It's overrated if you can use your weight properly,' Yuuto thought as the student beneath him let out a bloodcurdling scream. "GRAAAAAAHHHH!!" The sound tore through the bathroom, more violent and desperate than the first. The two remaining students flinched, horror etched on their faces as they watched, convinced they were witnessing a murder.

Yuuto finally released his grip. The first student collapsed to the ground, gasping and hiccupping, his body paralyzed with shock.

'H-he's... crazy...! Shit... that's not Yuuto...!! Where's the wimp who used to beg us to stop beating him...!?' one of the students thought, glancing at his fallen friend.

"What?" Yuuto's voice cut through their thoughts, making them snap their heads up. "I thought you guys wanted to make a sequel, right? What good is a sequel..." Yuuto smirked, feeling an unfamiliar lightness in his chest.

"...without a good twist?" His voice dropped to a low, sinister chuckle as he cracked his knuckles, taking slow, deliberate steps toward them.

"S-shit, he's crazy!" one of them stammered, a shiver running down his spine. "L-let's get the hell out of here!!" he yelled at his friend, his voice trembling with fear.

"CALM THE FUCK DOWN!" his friend barked, slapping his back. "He just got the drop on him, that's all! It's a bluff!" he said, forcing the panic to subside as they both refocused on Yuuto.

"Look at him," he continued, "he's weak. Did you forget? It's shit-eating Yuuto. Just a pathetic freak. Must've snapped and got lucky with Murasaki."

"R-right..." The third bully's fear began to fade as his confidence returned. His gaze hardened. "Thanks, Sousuke."

"Hmph, buy me a hamburger if you're thankful," Sousuke replied smugly. "I've been training every day. Got abs to die for, and you're no pushover either. Let's feed him that shit-stained water he loves so much and drown him in it for what he did to Murasaki!" he urged, a cruel grin spreading across his face.

"Hey," Yuuto called out, arms folded as he eyed the two bullies, his expression cold. "You done sucking yourself off, little pussy?"

"Tsche…!!! BASTARD!!!" Sousuke roared, his pride stung. He charged forward, determined to make Yuuto pay. 'I won't end up like Murasaki..!! He underestimated him,' he thought as he launched himself at Yuuto, aiming for a full-force tackle.

'Try and judo your way out of this, freak,' Sousuke thought, slamming into Yuuto's lower abdomen.

'Sousuke... he got him!' the third bully thought, his eyes wide as he watched Sousuke ram Yuuto against the wall with a sickening thud.

"ARRGH!!" Yuuto coughed violently, the air knocked out of him. Hearing the painful sound, Sousuke pressed harder, driving Yuuto further into the wall.

'This one's got the right idea,' Yuuto thought, struggling. 'My body was too slow to dodge…!!' He winced, his glasses knocked askew on his nose.

'How do you like that, bitch?' Sousuke grinned, his arms tightening around Yuuto. 'You can't beat me. I'm on the wrestling team. Once I've got you in my grip, it's over. I've never lost my hold since I was four!' he thought, relishing the feeling of Yuuto's ribs being crushed under his strength.

Yuuto felt the pressure building, his ribs on the verge of cracking. 'Damn it...' he thought, scanning the room in desperation. He saw the third bully's triumphant smirk, and Sousuke squeezing the life out of him.

'This is bad...' Yuuto grimaced, his eyes darting around—until something caught his attention.

'...Never mind.' Yuuto's eyes locked onto a nearby trashcan, filled with toilet paper. With a quick stretch, he grabbed the alloy bin, lifted it up, and slammed its sharp edge into Sousuke's back.

"AHH!!! WHAT!?" Sousuke cried out in pain as the metal can struck him.

'The edge of a trashcan, the edge of a book, the edge of anything is perfect,' Yuuto thought, slamming the trashcan repeatedly into Sousuke's back. Each hit weakened his grip, but he held on, tightening around Yuuto's abdomen like a vice.

"AHH, FUCK...!!! YOU FUCKER..!!!" Sousuke screamed as bruises began to bloom across his back. Despite the pain, his grip only tightened, and Yuuto could feel the pressure on his ribs, a sickening pop echoing as they began to crack. Sousuke grinned through the pain. 'Nice sound...!! Go down, you weakling bastard... I ain't never... huh...?' His thoughts trailed off as Yuuto suddenly went limp, dropping the trashcan with a heavy thud, leaning lifelessly against him.

"He… fainted!!" the third bully exclaimed, eyes wide with disbelief.

Sousuke smirked, triumphant. "Sousuke!! You got this bitch!! Let's go get the teacher... say he came at us with an object and we had to defend ourselves..." his friend suggested, as Sousuke began loosening his grip, the victory seeming assured. "He'll get expelled for sure...!!"

Just then, the friend's face turned pale as he screamed, "SOUSUKE!! LOOK OUT!!!"

'The reason I leaned on you...' Yuuto thought as he raised his thumb, arm positioned perfectly. 'Was to deliver this special technique...'

'10,000 years of pain...!!!' Yuuto thrust his thumb up with all his might, aiming directly at Sousuke's rear.

Sousuke let out an inhuman howl of agony, "GRAAAAAAAAAAAAAH!!!!" as his body jerked backward, arching in reflex. His grip on Yuuto instantly weakened, pain shooting through him.

'As I said... the edge of anything works,' Yuuto thought, smirking wickedly as he stepped aside, watching Sousuke clutch his behind in anguish.

"You… fucking gay or—" Sousuke managed to croak, turning around to face Yuuto, but by then, Yuuto's middle knuckle was already aimed just centimeters from Sousuke's temple.

Sousuke's eyes widened in disbelief. 'No way...'

"Bum champion," Yuuto muttered coldly as his knuckle slammed into the soft point of Sousuke's temple. Sousuke's head snapped to the side, his vision blurring instantly. Pain and dizziness overwhelmed him, but somehow, he still wouldn't fall.

Yuuto took advantage of the imbalance, swiftly pulling out his phone and slamming its edge against Sousuke's throat.

"KAAACCCKKK!!" Sousuke choked, struggling to breathe. Panic set in as he gasped for air, his body trembling in confusion and fear. Yuuto discarded the phone without a second thought and seized the moment, dragging Sousuke toward the ceramic sink.

In one fluid motion, Yuuto swiped Sousuke's leg, throwing him off balance, then yanked his arm, hyperextending it as he maneuvered behind him. With ruthless precision, Yuuto grabbed the back of Sousuke's hair and slammed his face into the ceramic sink.

Once.

Again.

And again.

And again.

AND AGAIN.

Yuuto grunted with each slam, the sound of bone and porcelain colliding sickeningly loud. The sink was now splattered with blood and littered with broken teeth as Sousuke's body finally gave out. Yuuto calmly searched him, retrieving something and hiding it behind his back. He then yanked Sousuke's unconscious body to the side, letting him slump to the filthy bathroom floor, his limp form rolling toward one of the stalls.

"Haaah... Haaah..." Yuuto panted heavily as he moved, stepping over both Sousuke and the first aggressor's bodies, Yuuto approached the last remaining member of the group. His face was a mask of calm, his posture unnervingly controlled. 

The final bully stood frozen, forcing himself to breathe, trying to steady his racing heart.

'Calm down…' he thought, watching Yuuto closely. 'I saw it. It's sick... but he just fights dirty. I've been in street fights. If I keep my focus and watch his movements, I'll be fine. Sousuke's right… it's just that weakling, shit-eating Yuuto…! And look at him! With cracked ribs and the way he pants like he'd about to faint from exhaustion any minute now... I got this.' he resolved, squaring his stance as Yuuto drew closer.

Yuuto's expression remained unreadable, his movements slow and deliberate. The last bully's eyes locked onto Yuuto's hand, concealed behind his back. Yuuto's chest rose and fell as he tried to steady his breath, sweat dripping down his forehead.

'He picked something up... Is it a knife? Did Sousuke have a weapon I didn't know about?' Panic crept into his thoughts as he anxiously tried to predict Yuuto's next move.

Yuuto stopped mere inches away, his gaze cold and unwavering.

'... Bring it on...! Whatever you've got there won't help you…!' The bully thought, tightening his fists, his focus glued to Yuuto's concealed hand.

In a sudden motion, Yuuto took a swift step back and pulled his arm out from behind his back. The bully's eyes widened, bracing himself.

'He's gonna throw it... it has to be a knife!' he thought, tensing his body in anticipation.

But then... Yuuto's hand emerged, tossing a napkin into the air.

The bully froze, momentarily confused.

'Ah... fu—' Before he could finish the thought, Yuuto's foot came crashing into his groin, the tip of his shoe landing a direct hit.

"Discombobulate?" Yuuto said aloud, watching as the bully's eyes bulged in silent agony, his family jewels folding into his body. The bully crumpled to the floor, curling into a ball, completely incapacitated.

Yuuto stood over him and his two fallen friends, surveying the wreckage he'd left behind as he panted heavily.

"Haah... It's always a bathroom," Yuuto muttered as he took deep breaths, walking over to the first bully he had taken down. 'It just has to be a bathroom. If I had a coin for every time I fought in a bathroom after transmigrating, I'd have two coins… You get the picture.'

He stepped closer to the one whose arm was still twisted unnaturally, the pain evident in his strained expression.

"Anyway... Four-joints," Yuuto said casually, his voice cutting through the tension like a blade. The bully gasped, eyes snapping upward in terrified realization.

"You seem kind of parched," Yuuto remarked, glancing at the filthy stall with a wicked grin. "Why don't I help you get some of those fluids back?"

"N-no… p-please… please... I'm sorry…!!! PLEASE!!!" the bully begged, his voice cracking as Yuuto dragged his limp body toward the stained toilet. His face twisted in horror as his head was shoved into the bowl, piss and shit stains soaking into his shirt and hair.

Water splashed violently as Yuuto forced the bully's face under. His body thrashed, bubbles of panic rising from the water. His arms flailed, trying desperately to break free, but Yuuto's grip remained unyielding.

"You said this was my favorite place, right?" Yuuto snarled, his voice low and dangerous. He pressed down harder, keeping the bully submerged. The student's limbs slapped against the sides of the stall in a desperate attempt to escape, but Yuuto's strength was relentless. "You spoke about it with such fervor... I figured I'd share it with you. Is it not to your liking?"

For a brief moment, the bathroom was filled only with the sounds of splashing water, strained gasps, and Yuuto's steady breathing.

When the bully's resistance began to weaken, Yuuto yanked him up. His face was red and swollen, gasping for air, his body convulsing in shock.

"You won't… get… away with this…" the bully choked out between coughs and wheezes, trembling as Yuuto held his face, his expression calm and collected.

"Oh...? So you're going to tell on me?" Yuuto asked, his voice cold.

"Y-yeah... We're gonna make sure you're jailed for life... Th-those injuries... they'll see you did it and—"

"I did it…?" Yuuto tilted his head with a mocking smirk. "Huh… but…"

"Aren't I just too weak for that? You must be confusing me with someone else…" He smirked, watching as the bully's eyes widened in alarm, his earlier words replaying in his mind:

=========================

"Triple suicide would be more believable than me doing anything to you, thanks to my history... and that video…"

=========================

"You…!!! YOU!!!" the bully growled, his voice raw with anger. But before he could say more, Yuuto slammed his face into the toilet seat with brutal force, knocking him out cold. His limp body crumpled sideways onto the filthy bathroom floor, motionless.

Yuuto straightened, walking to the sink and casually washing his hands before picking up his phone again. The last bully, still reeling from the blow to his groin, stared in disbelief at how calm Yuuto appeared… as if this was just another routine. He watched as Yuuto pulled a fresh paper towel from the dispenser, wiped his hands dry, and tossed it nonchalantly onto the tipped-over trash bin.

Yuuto's gaze briefly flicked to the bully still moaning in pain on the floor, clutching his crotch. Taking a slow, deliberate breath, Yuuto stepped over the broken bodies scattered across the bathroom like they were nothing more than obstacles in his path.

The bathroom was eerily silent now, the violent echoes fading into the stagnant air. As he passed by the last bully, Yuuto casually stepped on his back, pressing down just enough to elicit a pained groan.

'He's… crazy… fuck… FUCK... He's right… No one would believe he could do something like this...!!' the bully thought, teeth clenched, making sure his gaze didn't meet Yuuto's.

Without a word, Yuuto walked out, leaving behind a scene of wrecked bodies and shattered egos, the carnage in his wake nothing more than an afterthought.