Kenji rush to Vampire City immediately! He sprinted through the forest, Demon Slayer powers enhancing his speed and agility. Upon arrival, he saw flames engulfing the city square... and Gyutaro's menacing laugh echoing through the night. The heat from the fire licked at his skin as smoke clawed at his lungs, but he pushed forward, his Nichirin blade at the ready. Screams echoed in the distance, human and demonic alike, as chaos tore through the city. Blood coated the cobblestone streets, reflecting the firelight in crimson flashes, while vampire soldiers darted through the smoke, their eyes glowing with hunger and rage. Kenji didn't hesitate. He dove into the fray, slicing through one of the vampires mid-leap, his blade glowing with the crimson hue of his blood-breathing technique. Bodies fell around him as he fought his way toward the center of the destruction, where Gyutaro's silhouette stood amidst the flames, his grotesque scythe dragging through the ground behind him. The demon's laugh was a cacophony of madness, echoing in Kenji's ears as he remembered the village Gyutaro had massacred only weeks earlier. This wasn't just a battle. It was personal.
Kenji's mind flashed back to his younger sister, Mina, who had been killed by demons during a midnight raid. That pain had never left him. It was the fire behind every swing of his blade, the grief that had fueled his training. Now, staring at Gyutaro, that pain transformed into something sharp and precise. Gyutaro turned, his yellow-green eyes narrowing as he recognized the Demon Slayer. "Ah, another brat come to die?" he sneered, his voice as twisted as his body. Kenji didn't respond. Instead, he lunged forward, slashing horizontally in a blur of speed. Gyutaro blocked with his scythe, sparks flying as metal clashed against cursed flesh. The force of the collision sent a shockwave through the city square, blowing debris in all directions. The vampire soldiers paused, startled by the power radiating from both combatants. For a moment, the world shrank down to just the two of them—Kenji and Gyutaro—locked in a deadly dance of blades, blood, and vengeance.
As the battle raged on, Kenji felt the strain in his muscles grow. He had been fighting nonstop since arriving in the city, but adrenaline kept him going. Gyutaro was relentless, his movements erratic and deadly, his scythe slicing through the air with impossible speed. But Kenji had been training for this. Every breath was a technique, every step a calculated movement. He tapped into the Third Form of his Blood Breathing—Crimson Crescent—unleashing a devastating arc of energy that forced Gyutaro back. The demon staggered, surprised by the Slayer's strength. "You've gotten stronger," Gyutaro growled, licking blood from the corner of his mouth. "Good. Makes killing you more fun." Kenji didn't waste time on words. He pressed the attack, forcing Gyutaro to retreat deeper into the burning city.
Buildings collapsed around them as the flames consumed everything in their path. Kenji leapt over a crumbling wall, twisting in midair to avoid a thrown scythe, then landed hard on a rooftop now barely holding together. The roof cracked beneath him, and he dropped to the floor below, rolling to absorb the impact. Gyutaro followed, crashing through the ceiling like a meteor. The demon grinned, his twin scythes spinning. "You can't win, Slayer. Not alone." Kenji narrowed his eyes, blood trickling from a gash on his cheek. "I'm never alone," he said quietly. Just then, a blinding flash of blue lightning tore through the sky as another Demon Slayer appeared—Reika, Kenji's closest ally. Her Thunder Breathing lit up the darkness, her blade a blur of electric fury. She landed beside Kenji, breathing heavily, her eyes sharp and focused. "You always rush in without me," she muttered. "And yet, you're always late," Kenji replied, a faint smile on his face.
Together, they launched a coordinated assault. Reika's Thunder Breathing created openings that Kenji exploited, his Blood Breathing techniques striking with surgical precision. Gyutaro, for all his power, found himself on the defensive. Sparks lit up the night as blades clashed, and the air rang with the sounds of combat. Still, Gyutaro wasn't backing down. He snarled, releasing a cloud of blood blades from his body, forcing the Slayers to scatter. One of the blades sliced across Kenji's side, and he winced, staggering slightly. Reika covered him, striking down two vampire soldiers trying to flank them. "We need to separate him from the others," she shouted. Kenji nodded. "I'll draw him out. You take care of the minions." Before she could protest, Kenji vanished in a burst of speed, drawing Gyutaro's attention.
The demon chased him through the burning city, scythes swinging wildly. Kenji led him toward the ruins of an old cathedral on the edge of the city. The flames hadn't reached here yet, and the moonlight spilled through broken stained-glass windows, painting the floor in ghostly colors. Kenji skidded to a stop in the center of the cathedral, breathing hard. Gyutaro emerged from the shadows, dragging one scythe along the wall, leaving a deep gouge in the stone. "You're fast, Slayer. But not fast enough." Kenji raised his blade. "We'll see." The battle resumed with renewed ferocity. The cathedral echoed with the sound of blades and grunts of pain. Kenji used the environment to his advantage, leaping from pillars and dodging behind pews, forcing Gyutaro to fight in close quarters. The demon's wide swings were less effective here, and Kenji began to land more hits. Each one was met with a hiss of pain from Gyutaro, who was clearly growing frustrated.
Outside, Reika was holding her own. Her Thunder Breathing was a blur, cutting through vampire soldiers like lightning through a storm. She could feel the earth shake with the distant clash of Kenji and Gyutaro's battle and knew she had to finish quickly. A vampire lunged at her from behind, but she ducked, spun, and decapitated him in a single movement. Blood sprayed across her face, but she didn't flinch. These monsters had taken too much already. They wouldn't take Kenji, too.
Back inside the cathedral, Kenji was reaching his limit. His body was battered, his movements slowing. But so was Gyutaro. The demon's body was riddled with wounds, his regeneration lagging. Kenji saw his chance. He unleashed the Fifth Form of Blood Breathing—Scarlet Bloom—a flurry of strikes aimed directly at Gyutaro's vital points. The demon tried to block, but Kenji was too fast, too precise. With a final cry, he drove his blade through Gyutaro's chest, piercing his heart. The demon staggered, blood pouring from his mouth. "Impossible…" he whispered. "You… humans…" Then he collapsed, his body beginning to disintegrate. Kenji stood over him, panting, his sword shaking in his hands.
Reika arrived moments later, bloodied but alive. "You did it," she said quietly. Kenji didn't respond. He looked down at Gyutaro's remains, then up at the ruined ceiling of the cathedral. The moon shone down on him, cold and distant. "It's not over," he said. "There are more like him. Stronger." Reika nodded. "Then we fight. Together." Kenji finally looked at her, and for the first time that night, he allowed himself a small smile.
They left the cathedral and rejoined the surviving citizens in the city square. The fires had been extinguished, and the vampires had fled or been slain. The air was heavy with smoke and ash, but the worst was over—for now. Kenji sheathed his sword, his body aching, but his spirit unbroken. He had faced a demon of unimaginable power and survived. But more importantly, he had protected the innocent. That, he knew, was his purpose.
As dawn broke over Vampire City, casting a pale light over the destruction, Kenji and Reika walked away from the ruins. Their journey was far from over. But they walked forward with purpose, knowing that every battle they fought was for something greater. For those who couldn't fight. For those who had been lost. For peace. Kenji tightened the grip on his sword and whispered a silent promise to his sister: I'll keep going. I won't stop until they're all gone. And with that, the Demon Slayers vanished into the morning mist, ready for whatever darkness awaited them next.