Devil itself.

Throw stones.

—

As the panel appeared, Accelerator gritted his teeth, feeling the same disorienting sensation as before. "Oh, not again," he muttered, frustration boiling over. His surroundings blurred, and just as he was about to let out a stream of curses, his body vanished.

When his vision cleared, he found himself standing in the middle of a burning town. Flames licked at buildings, and the air was thick with smoke and the stench of burning flesh. "What the hell is going on?" he wondered aloud, eyes scanning the chaotic scene. 

A split second later, his senses screamed a warning. He turned just in time to see a grotesque figure lunging at him, a small scythe aimed for his throat. Accelerator roared in anger, his reflexes kicking in as he punched the scythe away. The force of his vector manipulation tore the demon's arm off, sending it flying in a spray of blood. The creature staggered back, clutching at the gushing stump where its hand had been, eyes wide with shock.

Accelerator's lips twisted into a malicious grin. "What's the matter, ugly? Didn't expect your arm to go missing?" He let out a laugh full of sarcasm, his eyes glinting with a dangerous light. The demon continued to back away, still reeling from the sudden loss of its limb.

"You know," Accelerator began, taking a step forward, "I've seen a lot of ugly bastards in my time, but you take the cake." He chuckled darkly. "How does it feel? Losing an arm like that? Painful, isn't it? Or maybe you're too dumb to feel pain?"

The demon hissed, but fear was evident in its eyes. Accelerator's laughter grew more manic. "Oh, come on, don't look at me like that! I just want to have a little fun. Let's see... How long do you think you can last with just one arm? Think you can still fight me? Or are you just gonna run away like a scared little rat?"

He took another step forward, his presence overwhelming. The demon faltered, clearly considering its options. "What's wrong? Can't handle a little human? Pathetic. You're all bark and no bite." He clicked his tongue, shaking his head in mock disappointment. "I was hoping for a bit more of a challenge."

The demon, desperate and enraged, tried to lunge at Accelerator again. But with a casual flick of his wrist, Accelerator redirected the creature's momentum, sending it crashing into a burning building. "You really don't learn, do you? I could do this all day," he said with a wicked grin, watching the demon struggle to rise from the wreckage.

"I'll tell you what," Accelerator continued, leaning in slightly, "I'll give you a chance. Tell me what I want to know, and maybe I'll let you keep your other arm." He laughed again, the sound echoing through the burning town. "Heh.. who am I kidding? I'm not letting you off that easy. But hey, I might be entertained enough to keep you alive a little longer."

The demon's eyes darted around, looking for an escape, but it was clear there was none. Accelerator's mocking voice followed it, relentless. "Now, be a good little demon and answer my questions. Or don't. Either way, I'm going to enjoy this."

With the town burning around them and the demon at his mercy, Accelerator's twisted smile only grew wider.

Accelerator's eyes gleamed with a manic light as he loomed over Gyutaro, ready to continue his cruel taunting. Just then, two more blades sliced through the air toward him, coming from the side. With a disinterested gaze, he effortlessly deflected them, turning his attention to the flashy newcomer who wielded them. The man's flamboyant appearance and blood-streaked body didn't impress Accelerator in the slightest.

"Who the hell do you think you are, interrupting my fun?" Accelerator's voice dripped with irritation as he flicked his wrist, sending a powerful shockwave that blasted the man into a nearby building.

Gyutaro took advantage of the distraction, slinking away from the confrontation. He hoped the two intruders would tear each other apart, giving him a chance to escape. Accelerator, however, paid no mind to Gyutaro's retreat. His focus was now on the flamboyant man struggling to his feet amid the rubble.

Tengen Uzui, the Sound Hashira, groaned as he pushed himself up. Among all the Hashiras, he prided himself on his speed and skill. Yet, this white-haired stranger had parried his attack with ease. A grin spread across Tengen's face despite the pain. He had encountered powerful foes before, but this was something entirely different.

Accelerator approached slowly, a menacing aura surrounding him. Tengen's eyes narrowed as he scrutinized the newcomer, noticing the absence of any demon traits. "Wait a second," Tengen called out, "Are you... human?"

The question caught Accelerator off guard, and for a moment, he was stunned into silence. Then, as if finding the situation utterly hilarious, he burst into laughter. "You think I'm a demon?!" he cackled, the sound echoing eerily through the burning town. "That's rich! Kek..hahahaha!"

Tengen remained cautious but couldn't hide his confusion. This guy had no demon characteristics, yet his strength was monstrous. "If you're human, why are you attacking us? Shouldn't you be helping us kill that demon?"

Accelerator's laughter died down, replaced by a cold, contemptuous stare. "Listen up, third-stringer," he said, his voice dripping with scorn, "Don't get in my way. You're nothing but a minor annoyance." With that, he turned his back on Tengen, dismissing him entirely as he resumed his pursuit of Gyutaro.

Gyutaro, who had regrouped and called for his sister, Daki, watched warily as Accelerator approached. The siblings stood ready to fight, their combined strength formidable. Daki, with her flowing white hair and elegant yet menacing appearance, joined her brother, her eyes locked on Accelerator.

"Who the hell is this guy, brother?" Daki hissed, her grip on her obi sash tightening.

Gyutaro grimaced, still clutching the stump where his hand had been. "I don't know, but he's dangerous. We need to be careful."

Accelerator's grin widened as he saw the two demons standing together. "So, you called for backup, huh? Good. This might actually be fun," he taunted, his voice a mixture of excitement and menace.

Tengen, still recovering from the earlier blow, watched from a distance. He couldn't afford to rush in recklessly again. This mysterious white-haired stranger was no ordinary opponent, and he needed to understand his abilities before engaging further. For now, he kept his distance, observing and waiting for the right moment to strike.

Accelerator, meanwhile, was relishing the thrill of the fight. The suffocating peace he had experienced in Rin's world was a stark contrast to the chaos and violence here. It reminded him of home, of the constant battles and challenges that kept him sharp and alive.

As he closed the distance between himself and the two demons, his mind raced with strategies. He knew he had the upper hand, but he wanted to enjoy this. To make them suffer. To show them the true meaning of fear. "Let's see what you've got," he whispered, his voice barely audible over the roar of the flames.

Gyutaro and Daki prepared themselves, their combined powers creating a formidable front. But even as they readied their attack, there was a nagging sense of dread. This white-haired human was unlike any they had faced before, and deep down, they knew they were in for the fight of their lives.

Accelerator's eyes gleamed with anticipation, his bloodlust palpable. "Come on, then. Show me your worst," he challenged, his voice low and dangerous.

And with that, the battle began in earnest, the town's flames casting eerie shadows over the combatants as they clashed.

Gyutaro and Daki moved with a frightening synchronicity, their combined speed surpassing even the fastest demon slayers like Zenitsu. They attacked Accelerator relentlessly, Daki's obi slicing through buildings with destructive precision, while Gyutaro's scythe left deep craters in the ground. Their movements were a blur, each attack calculated to exploit any perceived weakness in their opponent.

However, Accelerator met their onslaught with ease, laughing maniacally as he deflected their every move. His grin widened with each failed attempt on their part, the thrill of the fight igniting a dark excitement within him. 

"You call this a fight?" he taunted, his voice dripping with contempt. "Pathetic."

In a burst of speed, Accelerator lunged forward, catching Daki by the throat. Her eyes widened in shock and terror as he slammed her into the ground with bone-shattering force. She screamed in pain and panic, thrashing desperately to free herself from his iron grip. Accelerator leaned in, his face inches from hers, a sinister smile spreading across his lips.

"What's the matter? Not so tough now, are you?" he mocked, his voice a cruel whisper. Without waiting for a response, he began stomping on her stomach, each blow accompanied by a sickening crunch.

Gyutaro's eyes blazed with fury at the sight of his sister being brutalized. With a roar of rage, he launched himself at Accelerator, his scythe slashing with all the strength and speed he could muster. His hands trembled with anger, each strike fueled by a desperate need to protect his sister.

But Accelerator merely laughed, his mirth echoing through the burning town. "Is that the best you can do?" he jeered, parrying Gyutaro's attacks effortlessly. "Come on, show me what you're really made of!"

With a savage grin, Accelerator twisted Gyutaro's scythe aside and delivered a powerful kick to his chest, sending him sprawling backward. Turning his attention back to Daki, he tightened his grip on her throat, lifting her off the ground.

"You must have done something truly terrible to end up like this," Accelerator mused, his voice cold and detached. "Tell me, how does it feel to experience the pain you've inflicted on others? Does it hurt? Do you feel their suffering?"

Daki's eyes filled with tears of pain and fear, her struggles growing weaker with each passing second. Gyutaro, panting heavily, managed to rise to his feet, only to be met with the sight of his sister's torment.

"Stop it!" Gyutaro screamed, his voice hoarse with desperation. "Leave her alone, you monster!"

Accelerator's laughter grew even more deranged. "Monster? Look who's talking!" He sneered, his eyes gleaming with a sadistic light. "You two have probably caused more pain and suffering than anyone can imagine. Now, it's your turn to feel it."

He increased the pressure on Daki's throat, her gasps for air becoming more frantic. "How many lives have you ruined, huh? How many innocent people have you tortured and killed for your own amusement? Did you ever stop to think about their pain, their suffering?"

Gyutaro's rage reached a boiling point, and he charged at Accelerator again, his scythe aimed for his opponent's heart. But once more, Accelerator deflected the attack with ease, sending Gyutaro crashing to the ground.

"You're nothing but a couple of sadistic cowards," Accelerator continued, his tone mocking and cruel. "You enjoy inflicting pain on others, but when it's your turn, you can't handle it. Pathetic."

Gyutaro struggled to his feet, his eyes burning with a mixture of hatred and helplessness. "I'll kill you!" he vowed, his voice shaking with emotion. "I'll make you suffer for what you're doing to her!"

Accelerator's grin widened, and he tilted his head in mock curiosity. "Oh? And how do you plan to do that?" he asked, his tone dripping with sarcasm. "You can't even touch me, let alone defeat me."

With a final, brutal stomp on Daki's stomach, he released her, letting her body slump to the ground. "There," he said, his voice filled with cold satisfaction. "Now you know what it feels like. How does it feel to be powerless, to be at someone else's mercy?"

Daki lay on the ground, gasping for breath, her body wracked with pain. Gyutaro crawled to her side, his eyes filled with tears of rage and despair. "Daki... I'm so sorry," he whispered, his voice breaking.

Accelerator watched them with a mixture of amusement and contempt. "You two are a joke," he said, shaking his head. "You talk big, but in the end, you're just a couple of weaklings who can't even protect each other."

As he stood over them, his shadow looming large, it was clear that in this moment, Accelerator was more monstrous than the demons he faced. His cruelty and sadism knew no bounds, and his laughter echoed through the night, a chilling reminder of the horrors he was capable of inflicting.

The demon slayers on the sidelines watched in horrified silence, unable to stomach the sheer cruelty of the scene before them. Each of them averted their eyes, their hearts heavy with a mix of fear and revulsion. Only Tengen Uzui stood firm, his keen eyes fixed on the unfolding chaos. He assessed Accelerator with a mix of intrigue and cautious admiration. Despite the brutality, he could see a method in Accelerator's madness. There was a strange, twisted sense of justice in his actions, an anti-heroic quality that set him apart from the traditional demon slayers.

Tengen couldn't help but be impressed by Accelerator's ruthless efficiency and his unorthodox methods. He might be brutal, but his words served as a psychological weapon, breaking the demons' spirits even before their bodies. "Flashy," Tengen thought to himself, a grudging respect forming in his mind. Accelerator's taunts were more than just words; they were a tool, a weapon that inflicted as much psychological damage as physical.

Despite his admiration, Tengen's thoughts snapped back to the reality of the situation when he noticed Accelerator's growing frustration. Accelerator seemed confused, almost irritated, by the demons' apparent resilience. He had dismembered them multiple times, yet their bodies persisted in their grotesque attempts to regenerate. The sight of Gyutaro and Daki's mangled forms struggling to piece themselves back together was both horrifying and bewildering.

Tengen stepped forward, breaking his silence. "They won't die like that," he said, his voice steady despite the chaos around him. "Demons can only be killed by decapitation or exposure to sunlight."

Accelerator's eyes flicked toward Tengen, a spark of realization dawning in them. "So, they really are demons," he muttered, his grin widening as the pieces of the puzzle fell into place. He turned to face Tengen fully, his expression twisted with a mixture of amusement and curiosity. "What happens if you blow them up completely? Like, down to the last piece?"

Tengen hesitated, the question catching him off guard. He had never seen a demon disintegrated in such a manner. The idea was both intriguing and unsettling. "I... I don't know," he admitted, his mind racing. "I've never seen it happen before."

Accelerator didn't seem to care for the answer. He crouched down beside Daki's mutilated form, his eyes gleaming with sadistic glee. He inserted a finger into one of her wounds, his face drawing closer to hers. His voice dropped to a whisper, laced with a chilling, almost clinical curiosity. "Do you know what happens if a person's blood flow is reversed?"

Daki's eyes widened in sheer terror, a primal scream forming in her throat, but it was too late. Accelerator's power surged through her veins, reversing the flow of her blood. Her body began to bloat grotesquely, the veins in her skin bulging and pulsing as if possessed by a malevolent force. 

Gyutaro watched in helpless horror as his sister's body contorted and expanded. "No, Daki!" he screamed, his voice breaking with desperation. But his cries were drowned out by Accelerator's maniacal laughter.

With a sickening sound, Daki's body finally gave way, exploding in a gruesome shower of blood and gore. The rain of crimson soaked Accelerator, who stood in the midst of the carnage, his laughter echoing through the burning town. His white hair and clothes were drenched, giving him the appearance of a demon lord reveling in his macabre triumph.

Tengen watched in stunned silence, grappling with conflicting emotions. On one hand, Accelerator's methods were abhorrent, a stark contrast to the honor and discipline of the demon slayers. But on the other hand, there was no denying the efficacy of his brutality. For the first time, Tengen witnessed a demon so thoroughly and completely destroyed.

As Accelerator stood amidst the blood-soaked remains, his laughter slowly subsiding, he turned his gaze to Gyutaro, who was paralyzed with a mix of rage and despair. "How does it feel?" Accelerator taunted, his voice dripping with sadistic pleasure. "How does it feel to be powerless, to watch your own flesh and blood torn apart?"

Gyutaro's eyes blazed with fury, but his body was too broken to move. He could only glare at Accelerator, his hatred palpable. The scene was a grotesque tableau of suffering and sadism, with Accelerator at its center, relishing in his dark and twisted form of justice.

—