"Heh."
Akaza sneered twice and said nothing, leaving Doma to interpret it himself.
Naturally, Doma couldn't figure it out.
"Excellent. The Transparent World must have entered an entirely new realm, hasn't it?"
Kokushibo silently marveled at Ryuya's growth.
Compared to himself, Ryuya had comprehended and awakened the Transparent World much earlier. Although he had provided guidance—and had once fumbled through it alone—Ryuya's talent was undeniable.
"Father, kill Hantengu."
"Kill him?"
Muzan was slightly stunned.
Throughout history, blood battles for replacement had been merciless. Whether the challenger or the challenged, the victor would devour the loser—both to increase strength and to deter future challengers.
But Ryuya didn't intend to eat him?
"His flesh is too disgusting. I find it repulsive."
Ryuya answered plainly.
Unless he wielded a Demon Slayer Corps Nichirin Blade, he couldn't truly kill Hantengu. But Muzan would never allow him to carry one—just as Kokushibo did not.
And as for eating Hantengu?
Absolutely not.
It was simply revolting.
"Very well."
Muzan had no reason to refuse.
In a blood battle for replacement, the loser's fate belonged to the victor.
When Akaza had failed to challenge Kokushibo, Kokushibo had spared him.
Muzan slightly raised his index finger, his expression turning cold.
Pinned to the ground by Ryuya's blade, Hantengu whimpered in terror.
As Muzan's will activated the curse within him, Hantengu's body convulsed violently.
"Lord Muzan, please don't kill me! I'm so pathetic—please don't—!"
His shriek was cut short.
Upper Rank Four Hantengu's body swelled grotesquely—then exploded into a mist of blood.
Muzan's beautiful eyes held a faint smile. He felt nothing at Hantengu's death.
He glanced at Nakime.
Understanding immediately, Nakime plucked her biwa.
The floor beneath Ryuya rose smoothly, bringing him before Muzan.
Within the Infinity Castle, Nakime controlled everything.
The battlefield below was shattered and cracked beyond recognition—a testament to Ryuya's overwhelming victory.
From beginning to end, despite the intensity of the fight, Hantengu hadn't even touched a corner of Ryuya's clothing.
"Wu Ya, from this day forward, you are Upper Rank Four."
Muzan extended his hand and cut his fingertip with his nail.
Crimson blood dripped into Ryuya's palm.
Then—
Ryuya did something that left Muzan completely bewildered.
He calmly pulled out a bamboo tube from his waist pouch and placed it under Muzan's finger.
Drip.
Drip.
The blood fell neatly into the tube.
"What are you doing?"
Muzan stared at him.
"Father, your blood is precious immortal spring dew. I can't bear to drink it all at once—I want to save it and savor it slowly."
Muzan's smile froze.
Save it and savor it slowly?
This was a reward.
And instead of accepting it immediately, this brat had brought out a bamboo tube the size of a small water jug.
Were you planning to drain him dry?!
Did he look like a water dispenser?!
The surrounding Upper Rank Demons were equally stunned.
You… can do that?
They had learned something today.
"Wu Ya?"
"Hm? Father, it's barely covering the bottom. Don't rush."
Ryuya glanced at the shallow layer of blood inside the tube, clearly dissatisfied.
If circumstances allowed, he might as well stab Muzan directly. At this rate, how long would it take to fill?
Muzan's temple twitched.
Barely covering the bottom?
Were you trying to bleed your own father dry?!
A flicker of anger flashed across Muzan's delicate face as he withdrew his finger.
"Hey—don't waste it!"
Ryuya twisted at the waist to catch the droplets before they hit the floor.
Muzan went completely numb.
He froze for several seconds before reacting.
What the hell is wrong with this kid?!
Furious, Muzan grabbed Ryuya by the throat and forcibly shoved his bleeding finger into his mouth.
"Mmph!"
Ryuya's eyes widened.
The metallic taste of blood spread across his tongue and slid down his throat, igniting his senses.
"Don't suck—let go!"
Muzan's eyes widened in disbelief.
Was this brat a vampire?!
"Lord Muzan is so rough!"
Daki shrieked and hid in Gyutaro's arms.
"Lord Muzan, you spoil Young Master Ryuya too much. I'm so envious—can I join in?!"
Doma wriggled excitedly as he stepped forward.
He wanted to drink too!!
"Doma, are you courting death?! Get lost!!"
Muzan snapped, thoroughly enraged.
What was wrong with this bunch?!
Not doing their duties—each one trying to drink their boss's blood!
"Lord Muzan is so fierce—scary!"
Daki burrowed deeper into Gyutaro's embrace.
Gyutaro trembled on the verge of tears.
Please, little sister, say less…
Kokushibo wished he could disappear.
This atmosphere was completely chaotic.
What was going on here?
Finally wrenching his finger free, Muzan glared at Ryuya.
"Wu Ya, if you dare to be so presumptuous again, don't blame me for being impolite!"
His beautiful face was flushed with anger.
Seriously.
The brat had nearly sucked his finger raw.
If it wasn't your own finger, you really wouldn't feel bad about it, would you?!
"Mhm."
Ryuya nodded obediently.
Yet that obedient expression somehow made Muzan feel as though he was being mocked.
It was infuriating.
Exasperating.
And strangely helpless.
If Ryuya dared to pull that stunt again, he would absolutely teach him a proper lesson.
Muzan stood there in his black kimono, still in his delicate female disguise, scolding him.
Ryuya, however, felt no fear at all.
In fact…
He found it slightly cute.
But—
Had Father forgotten something?
This was already an Upper Rank meeting.
He had met everyone.
Yet he still hadn't changed out of his female disguise?
...
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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