"Huh?"
Hantengu's tears abruptly stopped, his face twisting into a hysterical breakdown.
Good heavens—Young Master Ryuya was even more extreme. He just started the banquet directly!
Why was he so pathetic? Everyone wanted to bully him!
"Hantengu, I'm going in. Get ready."
Before his voice even faded, Ryuya had already drawn the Nichirin Blade from his waist and charged forward.
Hantengu was terrified. Although Ryuya's Nichirin Blade was not one forged by the Demon Slayer Corps and would not kill him through decapitation alone, the demon eyes embedded along the blade radiated an overwhelming deterrent force. Its pressure was extraordinary.
"Waaah, I'm truly so pathetic!"
With a wail, Hantengu's head flew into the air.
Ryuya wasn't surprised. Hantengu's Blood Demon Art allowed him to split after decapitation, eventually forming four separate demons representing joy, anger, sorrow, and pleasure.
From Hantengu's severed remains, two demons crawled out first.
They each had two horns growing from their heads, bulging veins across their faces, tree-branch-like black markings at the corners of their eyes, and short black hair. They were almost identical—handsome in a twisted way.
The only difference was their tongues.
One bore the character for "joy."
The other bore the character for "anger."
These were Karaku and Sekido.
Karaku held a round fan, capable of generating devastating gales. The wind pressure alone could shatter the ground.
Sekido wielded a tin staff that discharged violent lightning, summoning countless bolts of thunder.
Karaku moved first.
With a casual swing of his fan, he created three compressed wind spheres that shot toward Ryuya from the left, center, and right.
Ryuya remained calm. He planted his blade into the ground, stepped on the hilt, and launched himself into the air, slashing as he ascended.
Three intersecting Moon Blades tore forward.
The wind spheres were shredded instantly. The Moon Blades continued on, undiminished, racing toward Karaku.
Karaku hastily dodged—but he was a fraction too slow.
One arm was severed cleanly.
His fan clattered to the ground as he scrambled to retrieve it.
Ryuya seized the opening, preparing to land and continue the assault—
But Sekido acted.
Lightning crackled at the tip of his tin staff. The blue arcs condensed into a massive lightning spear and shot straight toward Ryuya midair.
Unable to land in time, Ryuya activated his technique midair.
Ryuya swung his blade in a smooth arc, "Moon Breathing, Fifth Form: Moon Spirit Calamitous Flow!"
Crimson Moon Blades spiraled outward like layered waves, both defensive and devastating.
The lightning spear shattered against the spiraling crescent slashes.
The Moon Blades continued forward, slamming toward Karaku.
Karaku's pupils shrank.
He tried to dodge—but his body felt rigid, as if frozen.
The next instant, the crescent slash tore straight through him.
Sekido retaliated immediately. A thunderous roar echoed as a bolt of heavenly lightning crashed down from above.
But Ryuya had already vanished in a swift step.
His blade flashed in a single, clean Iai strike.
Ryuya's voice fell coldly, "Moon Breathing, First Form: Dark Moon – Evening Palace."
Sekido's head separated from his body.
Karaku collapsed.
The two demons fell.
"Wow, Brother Ryuya is amazing!"
Daki's eyes sparkled, her flushed face glowing with excitement.
"Young Master Ryuya's attacks are truly exquisite. It seems Hantengu is finished."
Gyokko grinned, chuckling.
Sometimes, even if you're disliked, you must have value.
Didn't he let Young Master Ryuya sell his pots for money?
Could Hantengu do that?
How interesting—it's all about the details. Learn from it!
I've always said, life isn't about fighting and killing; it's about human relations!
"Brother Ryuya's movements are truly fluid."
"Yes, Akaza-dono, our views are truly the same!"
Doma grinned and casually threw an arm around Akaza's neck.
Akaza's expression darkened immediately.
Veins bulged along his clenched fist.
He utterly detested Doma.
Akaza hated Doma's habit of eating women. He despised those who preyed upon women and the weak.
And Doma fit that description perfectly—yet remained blissfully unaware that others loathed him.
To put it bluntly, if Akaza were strong enough, he would have already initiated a Rank Battle and erased Doma's existence.
But he wasn't.
With Kokushibo, who strictly upheld hierarchy, and Muzan present, Akaza could only endure.
"Akaza-dono, come visit me at the Eternal Paradise Cult sometime!"
Doma grinned brightly.
Akaza didn't even bother responding.
He ignored him and refocused on the battlefield.
Not bad. Great progress. No wasted movements. It won't be long before he might catch up to me.
Kokushibo observed silently, wondering how far Ryuya had progressed in the Transparent World.
His strength is indeed formidable—perhaps already surpassing Doma's?
Muzan watched Ryuya's combat with faint pride.
As expected of my son.
Truly excellent.
Meanwhile, Ryuya faced a second wave.
Karaku and Sekido's bodies regenerated—and then split again.
Two new demons emerged.
Zohakuten and Aizetsu.
Zohakuten was a half-avian creature with wings and bird-like claws for hands and feet. His talons could rend stone, and he emitted destructive sonic attacks from his mouth.
Those struck directly could suffer ruptured eardrums—or worse, full-body bleeding and unconsciousness.
Aizetsu wielded a cross-patterned spear capable of firing powerful shockwaves that pierced through demon flesh.
Now, Zohakuten, Aizetsu, Karaku, and Sekido stood together—the four manifestations of joy, anger, sorrow, and pleasure.
Ryuya moved first.
He slashed in all directions, "Moon Breathing, Second Form: Flowing Moon!"
Eight intersecting Moon Blades shot toward the four demons.
Each reacted instantly.
Zohakuten took flight, dodging while unleashing a piercing sonic blast.
Aizetsu thrust repeatedly, shockwaves shattering the incoming crescent slashes.
Karaku whipped up a violent hurricane.
Sekido summoned a storm of lightning that condensed into a crackling net.
Attacks converged from every direction.
"Be careful, this attack isn't easy to handle!"
"You'd better experience the taste of my sonic attack!"
Their chatter grated against Ryuya's nerves.
His grip tightened.
Crimson killing intent flickered in his eyes.
Then—
The Nichirin Blade transformed.
Its length extended. Irregular crescent-like protrusions grew along its body.
Ryuya inhaled sharply.
With one overwhelming swing, dark purple Moon Blades erupted outward, dominating the battlefield.
The four demons' combined attacks were instantly annihilated.
In the same breath, their heads were severed.
Ryuya's voice echoed coldly through the battlefield, "Moon Breathing, Eighth Form: Moon Dragon's Tail!"
...
Author's Note:
The full completed version of Demon Slayer: Son of Muzan (Completed) is now on Patreon!
🔥 I also have an Additional 18+ fanfics now available for readers who enjoy exclusive mature stories. 😉
1.Dragon Ball: Oolong's Sex Adventure
2. Elements of Lust – ATLA & Korra Mixed Smut
3. Doraemon: Filtering with Nobi Tamako
4. The Naive Me Who Became Someone's Everyday Secret
5. High School DxD: Rias Gremory, the Phenex Bride
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