
In the deceptive calm of a Taish?-era night in Asakusa, Tokyo, Tanjiro and Nezuko strolled side by side, finally able to relax after years of grueling training. Their postures had matured into those of young adults—stronger, more confident, carrying the quiet grace that came with hard-won growth. Yet the fire of justice and vengeance still burned fiercely inside Tanjiro.
It flared the moment he caught a faint, unmistakable scent on the breeze: the same demon that had slaughtered his family and turned his sister into one of them years ago.
Without a word, Tanjiro bolted forward, weaving through the crowd and vanishing into the sea of people. Nezuko, confused and caught off guard, hesitated before sprinting after him—only to lose sight of him almost immediately in the bustling throng.
She searched for hours, pushing through the masses without success. Eventually, she turned to the quieter, more deserted side streets and alleys, scouring every shadowy corner deep into the night. Still no sign of her brother.

Then something else caught her attention.
A demon with temari balls darted through the gloom, careful not to draw human eyes, muttering under her breath: “Tanjiro… Where are you…? I’ll take your head to Muzan-sama and earn my place among the Twelve Kizuki!”

Nezuko slipped into the shadows and followed silently. If this demon was hunting her brother, she might lead Nezuko right to him—and Nezuko wanted to stay close in case he needed protection.
The temari demon drifted farther from the lively center until she slipped into an abandoned house on a fenced, overgrown lot. Nezuko hesitated at the threshold. If Tanjiro was inside, he might already be fighting. She couldn’t leave him.
Creeping in, she was immediately ambushed—two temari balls ricocheted off the walls, nearly striking her. She leaped aside at the last second, tumbling into the main room and landing face-to-face with the demon.

“Hey! Why are you creeping after me like that?! You one of those Demon Slayer pests?” the Temari Demon barked, flashing a wicked, toothy grin. “Come on—spit it out! Who are you?!”
Nezuko said nothing.
Susamaru’s temper flared. Four extra arms sprouted from her body, each clutching a temari ball. She hurled all six at once.
Nezuko dodged most, but one slammed into her with brutal force, hurling her through the wall and into the next room in a shower of splintered wood.
“Pfft! Pathetic human… Dead from a single hit. At least you’ll make a decent snack before I find that Tanjiro guy…”
Susamaru let her balls drop and strolled casually through the gaping hole—only to freeze when she saw Nezuko rising from the rubble, completely unharmed.
“Grrr… Tougher than I thought. Let’s see how you handle this!”
She conjured another temari, slammed it into the floor, and kicked it straight at Nezuko’s legs. Nezuko tried to return the kick—but Susamaru’s power tore her leg clean off.
“Hahahaha! How pathetic! You really think human strength can match a demon’s? Try that again with your one remaining leg, why don’t you? Hahahaha!”
Susamaru conjured and launched another ball at Nezuko’s supporting leg.
But in an instant, Nezuko’s severed leg regenerated at astonishing speed. She countered with a ferocious kick, sending the temari rocketing back—stronger—ripping one of Susamaru’s own legs away.
“Wha—?! Impossible… You… You’re a demon too?!”
Stunned, Susamaru faltered in her regeneration as Nezuko advanced and stopped right in front of her.
“B-but… Lord-sama never mentioned another demon like you… Why are you here? Answer me! You can talk, right?!”
Slowly, Susamaru’s leg began to regrow.
“L-Lo… Lord”
“Huh? What? ‘Lord’? Wait—did he send you too?!”
“Lord!”
“Grrr! I get it! You’re trying to steal my spot in the Kizuki and get close to our lord! But I won’t let you! A demon like you could never satisfy him! He needs someone with big breasts like mine!”
“Breasts! Big!”
“Grrr! You little—!”
Susamaru took Nezuko’s limited words as provocation. Jealousy for Muzan ignited inside her. She stepped forward, pressing her chest directly against Nezuko’s.
“Look closely. My breasts are BIGGER—so he’ll prefer mine!”
Nezuko stared down, then retorted: “Mine! Bigger!”
She stomped the floor and shoved Susamaru back using only the sheer force of her chest.
Susamaru’s eyes widened in disbelief at the audacity. She stomped forward in retaliation, pushing back—but Nezuko held her ground. Their massive breasts collided and compressed between them, four temari balls caught and squeezed in the middle as the two demons snarled.
“Grrr! I won’t let you near our lord!”
“Grrr… Mine! Bigger!”
They remained locked in a contest of strength and size, neither gaining ground.
Frustrated, Susamaru changed tactics. She wrapped all six arms around Nezuko in a crushing bear hug, lifting her slightly off the floor.
“Ughhh! Let’s see your breasts survive this! I’ll flatten yours so badly there’ll be nothing left to offer him! Mine are stronger! Hahahaha!”
“Ughhh… Mine… Strong…”
With effort, Nezuko freed her own arms and returned the crushing embrace, lifting Susamaru off the ground for a moment before they settled back into a deadlock.
For hours they squeezed and strained, locked in an endless stalemate of power and size. Neither showed fatigue—demons never did.
Finally, Susamaru growled, “This is going nowhere. We’re both demons; we’ll never tire. Let’s release at the same time and settle it another way.”
Nezuko nodded.
“On three! One… Two… THREE!”
Susamaru grinned wickedly and squeezed even harder—only for her smile to vanish as Nezuko did the exact same.
“Argh! You LIAR! We agreed to let go on three!”
“LIAR!”
Nezuko retaliated by sinking her teeth into Susamaru’s neck and shoulder. Susamaru bit back just as fiercely.
CHOMP! CHOMP!
NHAC! NHAC!
Hours passed in a frenzy of biting and regenerating. Their bear hug gradually weakened as they focused solely on tearing into each other.
Realizing they were evenly matched in regeneration, Susamaru seized the moment when Nezuko’s grip slackened. She planted a foot against her and shoved hard, sending Nezuko crashing into the wall.
“Enough of this pointless crap! The sun’s about to rise—we’ll be trapped in this filthy wreck!”
The words barely registered. Nezuko charged and delivered a devastating kick to Susamaru’s chest. The top shredded, exposing one bare breast—and the force tore the other clean off.
“Ahh! My top! My breast! You filthy demon—you’ll pay!”
Susamaru regenerated instantly and returned a kick that shredded Nezuko’s dress, blasting both of her enormous breasts across the room.
The carnage continued. Nezuko regrew hers and ripped off Susamaru’s right breast with her bare hands. Susamaru regrew and tore off Nezuko’s left. Soon Susamaru resumed using her temari, hurling them at Nezuko’s chest while Nezuko batted them back toward Susamaru’s—destroying and regenerating breasts endlessly as the balls ricocheted wildly off the walls.
Until a distant, desperate cry pierced the chaos:
“NEZUKOOOO! NEZUKOOOO!”
It was Tanjiro. He had searched all night, frantic with worry as dawn approached.
The two demons froze and glared at each other.
“Grrr! If it weren’t for the sun, I’d finish this right now. But it’ll have to wait. Remember my words—our lord will choose my breasts, not yours!”
“Mine! Bigger!”
“GRRR!”
“GRRR!”
Fists clenched, they nearly resumed the mutilation—but Tanjiro’s footsteps echoed closer. Susamaru leaped through a broken window and vanished into the shadows.
Tanjiro burst in moments later.
“Waaah! Nezuko! I looked everywhere! Quick, get in the box—the sun’s coming! Wait… AAAAH! NEZUKO!!! Where are your clothes?! Get in the box fast before anyone sees you like this! I’ll buy you new ones right away!”
Minutes later, the first rays of sunlight flooded the completely devastated house. Tanjiro gazed at the destruction, a proud smile touching his face.
His little sister had fought bravely.
To be continued…