Their golden hair lifted and swirled in the air, moving without wind, their bodies radiating the overwhelming aura of a lion's majesty.
"Master, thank you for the strength you've given us!" Shion declared, her voice firmer, clearer.
"Master, me too!" Kaen echoed, just as eager.
The two of them were already visibly more agile, their voices sharper, their golden eyes glowing with newfound clarity.
Meanwhile, beneath him, Ella swallowed greedily, determined not to lose her rhythm even as the lion twins roared their gratitude.
"Stand up. There's no need to be so formal."
His voice was calm, but Yami Tsukishiro himself felt the weight of caution.
Ella, on the other hand, looked completely dazed between the twins. Her mouth never stopped moving, those tut-tut sounds echoing shamelessly in the quiet hall.
If Yami weren't so thick-skinned, he might've faltered right there. But Shion and Kaen were utterly loyal neither sister showed the slightest hesitation. Their golden eyes were locked on him, filled with devotion.
Still… their expressions had become richer, more human, after their power-up.
Shion's gaze was steady, calm, observant—studying Ella with measured curiosity.
Kaen, meanwhile, flicked her tail idly, her eyes glinting with wild curiosity, her body language restless, playful, unrestrained.
They were clearly individuals now, not just "copies."
"Which of you is the elder sister, and which is the younger?" Yami asked casually.
The twins looked at each other, then answered at the same time:
Shion: "Master, I am the elder sister."
Kaen: "Master, I am the elder sister."
"…As expected."
Shion carried herself with the poise of a rational, dignified older sibling, while Kaen's untamed energy screamed of the younger.
[Ding! 50,000 magic stones consumed. Immortal Girl Ella's S-Rank meme [Immortal Control] has been upgraded to Level 6!]
"Mmh… Master… I feel so hot too~"
Ella finally raised her head, her lips glistening, cheeks burning red as she moaned softly. The surge of power coursing through her spilled outward, radiating heat.
Good grief… everyone's energy really was exploding all at once.
Yami glanced at the sisters—they were staring right at him, unblinking, watching.
"…Enough," he muttered.
He'd endured Ella's cuteness long enough.
Yami grabbed her by the wrist, pulled her up, and pressed her down onto the throne.
Pak! Pak! Pak!
The sound of flesh meeting flesh cracked through the hall in steady rhythm. The throne itself trembled beneath the impact.
Ella's voice spilled out in sweet cries, her hands gripping the throne's arms desperately.
"Ahh~! M-Master…! Nnnhh~ so deep!"
Her silver hair fluttered wildly as her hips bounced in time with his thrusts, the golden glow of her newly strengthened body only making the sight more dazzling.
Shion's cheeks flushed, though she tried to keep her composure, watching with that calm elder-sister air.
Kaen, by contrast, wagged her lion tail in sharp flicks, her wild golden eyes following every movement, almost panting with excitement just from watching.
The throne room was filled with heat, the sound of clapping echoing like a battle drum, Ella's moans layering over it like a song.
pak-pak-pak
And Yami Tsukishiro, sitting on his throne, conquering the immortal girl in full fire looked every bit like the king of beasts himself.
Yami leaned close, his voice low and teasing.
"You really worked hard just to get my dick, didn't you?"
Ella's flushed face lifted, her lips trembling as she moaned between ragged breaths.
"Y-Yes, Master… I wanted that big cock inside me, ruining me, messing me up~"
A feral grin spread across Yami's lips. He grabbed her by the hair, yanking her head back as his hips slammed forward harder.
Pak! Pak! Pak!
Ella's cries grew louder, echoing in the throne room, until the scene itself blurred—
"Sister… me too. We will also…"
No one knew how many hours passed.
By now, Shion had seen more forbidden positions than she could count. Her face, once so composed, was flushed and delicate, almost painfully alluring.
Kaen's wildness showed in her restless tail, her eyes shining with reckless desire. But compared to her, Shion—as the elder sister—remained calmer, her expression serious even as she blushed.
"Sister," Shion whispered firmly, "we must be loyal to our Master. We must make him happy. So… watch closely, and learn well."
Her golden eyes focused intently, studying Ella's every movement, memorizing the way her body bent and bounced. She was analyzing, internalizing, preparing to apply it herself.
Another half hour passed before Ella, utterly dazed, was finally carried back to the bedroom.
Yami adjusted his clothes casually, sitting back down on the throne. The room still smelled of heat. He exhaled, a little helpless.
"…My apologies. Ella has warm feelings for me. As her Master, I couldn't refuse her."
"Master, please don't say such things."
This time, it was Shion who spoke up first. Her voice was steady, but her golden eyes glimmered.
"If Master could respond to my feelings the same way… I would be very happy."
Kaen's lion ears perked instantly, her tail flicking as she leaned forward.
"Me too! Me too!"
"Cough…"
Even Yami Tsukishiro, shameless as he was, couldn't help but feel a little embarrassed at such direct words. But their honesty carried no pretense—this wasn't flattery, but truth.
His gaze shifted away, toward the depths of the Bone Graveyard.
There, something new had been born.
A magic stone mine.
Not far from Dead Bone City, it pulsed with an eerie glow.
This mine was no ordinary resource—it was the crystallization of the origin extracted from the devoured High School of the Dead world.
The essence of that world continued to condense here, manifesting as magic stones.
A mine that could continuously produce the very fuel he needed.
And what of the countless humans who had perished in that world? They were already here, their souls bound in death. Ready-made miners.
"Before that…" Yami's lips curved faintly.
"…let's change the layout of Dead Bone City."
From above, it was as though the unseen hand of a god spread across the map.
The City of Death Bones was about to expand.
Yami stood before a huge three-dimensional map projected by his own magic. Lines of light circled and stretched outward as if an invisible god's hand were redrawing the land.
"First…" he murmured.
An invisible barrier unfurled, separating the current City of Death Bones from everything around it.
He extended it outward in a perfect circle.
Within moments, the blueprint of a new city appeared.
The inner city would remain as it was — the heart, protected and pristine.
Around it, an outer city would grow, a ring like a fortress wall.
Beyond that, another barrier would spread until it enveloped the magic-stone vein itself, transforming that area into a vast mining zone — harsh, ugly, but efficient.
Finally, a last barrier would isolate the entire mining area from the rest of the Bone Cemetery.
The composition of the Bone City was decided.
He tapped the map; glowing markers appeared where new districts would be built.
The inner city would become an activity zone for his female adventurers.
They weren't ordinary women — they were his own, bound to him — so it was only natural that outsiders would never be allowed to see them.
The mining area would be populated by the beings who had once invaded his worlds.
Not as free citizens, but as labourers.
But Yami Tsukishiro was not some mindless capitalist who planned to work them to death.
Each would have a quota. Each would have a ranking system.
Those who failed to meet their quota would be permanently removed.
The top hundred would gain the right to move into the outer city and, eventually, become adventurers themselves.
Men and women would be strictly separated. A strangely humane measure in an otherwise ruthless system.
Population growth? He waved the thought away. That was a problem for later. For now, world-invasion was enough.
He looked at the glowing map and couldn't help but laugh at himself.
"Boy… I'm really a slave owner now."
Even Yami Tsukishiro was stunned by the efficiency of his own plan.
The throne room was silent except for the faint hum of magic and the echo of his chuckle — a king of beasts, a king of bones, and now, a king of cities.
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