High School DxD:Milking System World

A bit irritated, Jin stopped in his tracks and glanced over his shoulder.

"What?" he asked, narrowing his eyes at Katase.

Her face turned red, and she stammered nervously.

"W-Well… I-I still don't believe that Issei didn't steal the panties!"

Jin's eyes flashed with irritation.

"And what are you planning to do? Beat him with a shinai until he confesses?" His tone was sharp, and his shoulders tensed slightly. "How barbaric."

"No! It's not like that!" Murayama shouted instantly, denying his accusation. She glanced at Katase, and after a moment of silent agreement, she continued.

"If… If he agrees to have a spar with me, I'll believe him. You see… the Perverted Trio always runs away when they're guilty of something, so—"

"So you want to beat my brother in a spar?" Jin stepped forward, his gaze darkening as he approached the two girls.

Both Murayama and Katase froze as his imposing presence loomed over them. Neither of them had ever seen Jin so angry before. His sharp gaze bore into them, and instinctively, they took a step back, their legs trembling.

"Is that what you're implying?" Jin's voice was dangerously low. "You want to punish my brother, no matter what he says?"

The girls fell to their knees, overwhelmed by the intensity of his presence.

However, before things escalated further, Issei stepped in.

"Nii-san, stop. You're scaring them."

Issei patted Jin's shoulder, pulling him out of his anger. Jin turned to look at his brother and saw the serious expression on his face as Issei shook his head.

"…My bad," Jin muttered, stepping back to give Issei room to speak.

Issei looked at the two girls with a determined gaze.

"Murayama, Katase. I know it's hard to believe that I've changed, so I'll accept your challenge. I'll spar with you," he said firmly.

Jin's eyes widened slightly.

"Issei—" he started, but Murayama cut him off.

"Alright! Let's do it now!" she exclaimed excitedly.

"Wait—there's one condition," Issei added, holding up a hand.

"What is it?" Murayama asked as she stood up. Katase followed suit, though her gaze still held traces of doubt.

"If I win, you both have to help clear my name and spread the word that I'm not a pervert anymore. And…" Issei hesitated briefly, glancing at Jin with a sheepish smile. "…You also have to grant my brother one wish. If you don't, I'm pretty sure he'll never forgive you."

Murayama and Katase exchanged nervous glances before turning toward Jin. His cold frown made them both shudder.

"W-We can do that!" Murayama blurted out, nodding quickly.

"Y-Yeah! If it's Jin-kun asking, then… I don't mind. He's a gentleman, after all," Katase added, her cheeks reddening slightly.

"Great!" Issei clapped his hands together. He then turned to Jin with a grin. "This works, right, Nii-san? You said you wanted me to exercise more, so this is perfect!"

Jin crossed his arms, still slightly irritated with the two girls, but Issei's words were true. They had made a bet, and Jin had asked Issei to exercise as part of his punishment for losing.

"…Alright. But I'm watching from the sidelines," Jin replied, his tone softening.

Issei beamed.

"Awesome! Watch me win, Nii-san! I'll show you I can protect myself—and Yuuma-chan too! I know you're worried about that."

Jin's smile returned. 'Worried, huh? More like worried about what that girl might do to you.'

"Yeah," Jin replied simply.

Kuoh Academy - Kendo Club Dojo

Surprisingly, Katase was the one who volunteered to spar with Issei.

Jin stood at the edge of the dojo beside Murayama, both acting as referees for the match.

Issei stood in the center of the dojo, holding a shinai awkwardly. It was clear he had little experience with the weapon—or had only ever used it casually. In contrast, Katase held her shinai with practiced confidence, her stance steady from years of Kendo training.

'She's skilled, but… her physique isn't on Issei's level.' Jin observed.

While Murayama kept glancing at Jin with flushed cheeks, Jin's gaze was focused on the back of the dojo—where he could faintly sense someone's presence.

'So, someone's watching… Could Murayama and Katase be trying to help clear Issei's name after seeing how I defended him earlier?'

Jin glanced at Murayama beside him, and she quickly averted her gaze, pretending to look elsewhere.

'Looks like I misjudged them. They might have jumped to conclusions earlier, but at least they're trying to make up for it now.'

Jin returned his attention to the dojo.

Issei stood with an unusually serious expression—something rarely seen from his normally goofy brother. Across from him, Katase radiated confidence, her stance poised and ready.

Both fighters waited for the signal to begin, their eyes shifting toward Murayama—who was still lost in her own world.

"I-I'm standing right next to Jin-kun…" she mumbled under her breath, unaware that her words were audible.

"Hey, they're ready," Jin called out, breaking her trance.

"Kya!" Murayama squeaked in surprise. Noticing Katase and Issei staring at her, she quickly cleared her throat and composed herself.

"Alright. Are you both ready?"

"Yes!" Katase answered energetically.

"Anytime!" Issei replied, gripping his shinai tightly.

"Then… begin!"

At Murayama's signal, both fighters charged toward each other, shinai raised high.

It wasn't a sword duel—only a clean hit to the head or body was needed to win. Yet, both combatants charged straight in without hesitation.

Unfortunately for Katase, no amount of training could fully compensate for the difference in physical strength.

As she swung her shinai at Issei's head, he blocked the strike with surprising speed. His expression remained serious as he pushed forward, shouting at the top of his lungs.

"UWOOOGGHHH!!"

"Wha—?!" Katase gasped.

Before she could react, Issei twisted his shinai, knocking hers aside with a sharp clack. The force of the blow sent Katase's shinai flying from her hands, clattering to the floor a few feet away.

Issei wasted no time. He pointed his shinai at Katase's throat and grinned triumphantly.

"Hehehe… Looks like I win!"

"Grrr…!" Katase growled, her pride wounded by the unexpected loss.

On the sidelines, Murayama gasped in surprise.

"HUH?!" She turned to Jin, wide-eyed. "How did that happen?!"

Jin chuckled, crossing his arms over his chest.

"It's simple. My brother and I have experience with real fights. When we were kids, we used to spar with a childhood friend all the time. Plus, you do know that my brother ranks third in PE, right? Just below Yuuto Kiba and me. His score is almost the same as Kiba's—mainly because I force him to exercise every weekend."

"Really?" Murayama blinked in disbelief. "So that's why he accepted the spar so easily…"

Before Jin could respond, Issei approached them, still grinning proudly.

"Exactly! Like Nii-san, I always take my bets seriously!" Issei placed an arm around Jin's shoulder and looked at Murayama with a teasing smile.

"So, Murayama… Don't forget our deal. You and Katase have to grant Nii-san one wish."

"Grrr… Fine. But just one, right?" Murayama pouted, crossing her arms.

"Yes. And Katase has to do it too," Issei added with a nod.

"Yeah, yeah. I know," Katase muttered as she approached them, her cheeks still red from embarrassment. She looked up at Jin shyly, her gaze flickering away.

"S-So, Jin-kun… What's your wish? B-But… please don't ask for anything weird, okay?"

Murayama's eyes widened as realization hit her—Jin could technically ask for something lewd. A faint blush crept up her cheeks as her mind wandered.

"…That wouldn't be so bad," she whispered under her breath.

Jin raised an eyebrow, hearing her quiet comment.

'Did she really just say that?'

Grinning, Jin stepped closer and placed a hand on Murayama's shoulder, causing her to jump in surprise.

"I've decided on my wish," he announced, his voice low and confident.

Inside, Jin's mind was racing with anticipation.

'Kendo skills could be really useful. This is the perfect opportunity—and Murayama doesn't seem to mind doing something a little lewd with me. Clearing Issei's name can wait until later… But getting some good skills? I can't pass that up.'

His grin widened as he looked at both girls, his eyes gleaming with excitement.