Doma, Insouke and Kyojuro are teleported to a Dark forest and faced each other for a battle.
The icy winds howled through the darkened forest, chilling the bones of all who dared venture in. The once pristine landscape now lay in ruin, the air thick with tension as three mighty warriors prepared for an explosive battle. Before them stood Doma, the Upper Rank Two of the Twelve Kizuki, his cold, cruel grin twisted with malice as frost erupted from his hands like serpents from the void. Opposite him were Kyojuro Rengoku, the Flame Hashira, and Inosuke Hashibira, the wild boar of the Demon Slayer Corps.
Rengoku stood with his blade drawn, flames crackling around him like a fiery aura. His red eyes burned with intensity. "Let's burn him to ash, Inosuke!" he roared, his voice reverberating with righteous fury.
Inosuke smirked, cracking his knuckles. "I'll tear him apart, piece by piece!" His two serrated katanas gleamed under the faint light of the moon which were enchanted by Raja, ready to rip through the demon's frosty defenses. His battle stance was low and ferocious, mimicking the stance of a beast ready to pounce.
"How amusing," Doma chuckled darkly, his voice an ice-cold melody. "The Flame and the Beast. You think you can defeat me with your pathetic fire and primitive moves? How adorable." He raised a hand, his fingers curled like a conductor's as he summoned his blood demon art.
With a sudden gesture, the air around them dropped in temperature, the ground beneath their feet cracking and freezing. "Frost Lotus Bloom!" Doma shouted, creating a massive ice lotus that bloomed at their feet, encasing the area in a shimmering, deadly frost.
The temperature plummeted, and in a flash, the ice shards shot out, striking at Rengoku and Inosuke.
Without missing a beat, Rengoku swung his sword in a blazing arc. "First Form: Sun Fire!" His slash cut through the ice like a hot knife through butter, the flames creating a brilliant blaze that lit up the surrounding darkness. But Doma was ready.
"You think fire can stop me?" Doma sneered, summoning his next technique.
Doma flicked his fan, and with a sharp motion, a freezing wind shot out from it. "Glacial Tessen!" The wind wrapped around the battlefield, freezing the air and sending shards of ice speeding toward them.
"Not so fast!" Inosuke yelled as he dashed forward with his beastly agility, his body flowing like a wild animal. He dislocated his arm to extend his reach, dodging the ice projectiles. "Fifth Fang: Crazy Cutting!" He leaped into the air, swinging his katanas in all directions, slicing through the ice shards and slashing at Doma with ferocious speed.
With a flourish, Doma stepped back, his hands weaving through the air. "Crystal Frost Rain!" The sky darkened, and sharp needles of ice rained down from above. The ice created walls and barriers, aiming to trap the two demon slayers.
But Rengoku and Inosuke were far from outmatched.
"Fourth Form: Blooming Flame Undulation!" Rengoku spun his blade in a wide circle, deflecting the incoming ice with swirls of flame, setting fire to anything that came too close. "You'll need more than that, demon!" he taunted.
Meanwhile, Inosuke launched himself at Doma, growling in animalistic fury. "Third Fang: Devour!" His dual katanas slashed horizontally, aiming to decapitate the demon. Doma barely dodged, but Inosuke's attack still landed, cutting through his frozen skin.
Doma snarled, growing frustrated. "So, you like playing with fire and beasts? Let's see how you handle the cold!" He raised his arms, and the ground trembled. "Frozen Heaven's Judgment!"
A massive explosion of ice erupted from the center of the battlefield, freezing everything in sight. Inosuke and Rengoku barely managed to avoid being caught in the blast, their bodies freezing in place.
Rengoku gritted his teeth, shaking off the chill. "Sixth Form: Rengoku!" His sword ignited with fiery intensity, and he dashed toward Doma with blinding speed, leaving a trail of flame in his wake. The power of the technique shook the very earth beneath their feet as a dragon of fire swirled around him, slashing toward the demon.
But Doma countered, summoning his glacier-like structure. "Glacier Ascendant!" The massive ice wall rose between them, and Rengoku's flame dragon collided with the frozen wall, shattering into sparks.
"Enough with this!" Inosuke roared, his body brimming with adrenaline. He charged forward with reckless abandon. "Eighth Form: Explosive Rush!" His speed surpassed even that of the flame-imbued Rengoku, and he plowed through the ice with all his might, his katanas slashing at Doma with unrelenting fury.
Doma barely blocked the oncoming charge, but Inosuke's slashes left deep cuts in his body. "Tenth Fang: Whirling Fangs!" Inosuke spun in a dizzying circle, his swords a blur as they deflected ice shards and hit Doma's body with a brutal flurry.
Doma staggered back, visibly weakened but still smirking. "You're both persistent, I'll give you that."
Inosuke's eyes burned with fury, but there was something deeper in his heart—something that spurred him on with an even greater intensity. He remembered Raja's words. "Doma killed Your mother. This is for her… and for every Human he's ever harmed!"
With a guttural growl, Inosuke threw both of his katanas into the air. "Sudden Throwing Strike!" The blades spun through the air, cutting through Doma's defenses. In that split second, Inosuke dashed forward, dislocating his arm again to extend his reach even further. "Ninth Fang: Extending Bendy Slash!"
His katana sank deep into Doma's chest, the beastly slash cleaving through his heart. With a final roar of triumph, Inosuke drove both blades in, ripping Doma apart from the inside.
Doma let out one last chilling laugh, his form shattering into ice as his body crumbled into the cold dust of the battlefield.
As the ice around them melted, Rengoku slapped Inosuke on the back with a grin. "Well done, Inosuke! You've truly become a warrior of fire and beasts."
Inosuke grinned back, wiping the sweat from his brow. "Heh, that was fun. But let's never do that again. My bones feel like they've been frozen solid!"
The two warriors stood victorious, watching the last traces of Doma's icy form dissolve into nothingness. Their mission was complete, but the war against the demons raged on. Together, they would fight another day.