I Reincarnated as Both the Hero and the Demon King, and Now the Yanderes Won't Let Me Go - Chapter 9
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- Chapter 9 - The Demon King's Fragile Vessel
Chapter 9 – The Demon King’s Fragile Vessel
【Lilith PoV】
Something was wrong.
I felt it in my bones before I even opened the throne room doors. The air tasted different, stale and empty, like all the power had been sucked out of the atmosphere. My Lord’s presence usually radiated through the castle walls, a constant pressure that reminded everyone who ruled here. Now there was nothing, just cold stone and silence.
I pushed through the massive doors.
They swung open with a groan of iron hinges, and my heart stopped.
He was slumped over the throne’s armrest, his massive armored body tilted at an unnatural angle. One arm dangled limply, claws scraping the floor. His head lolled to the side, the glowing purple energy that usually rolled off him in waves completely absent.
“My Lord!”
The scream tore out of my throat before I could stop it.
I ran, my heels clicking against the obsidian floor like gunshots. My wings flared out instinctively, ready to attack, to defend, to destroy whatever had done this. Assassination attempt, poison, a curse, it didn’t matter. Someone had hurt him. Someone had dared to touch what was mine.
I reached the throne in seconds.
My hands grabbed his shoulders, shaking him gently at first, then harder when he didn’t respond. His armor was cold beneath my palms, the metal surface dull and lifeless. No heat, no energy, no sign of the overwhelming power that should be coursing through every inch of him.
“My Lord, please, wake up!”
Nothing.
His breathing was there, barely. I could see the faint rise and fall of his chest plate, the subtle movement that meant he was still alive. But it was wrong, too slow, too shallow, like watching someone drown in slow motion.
Rage exploded in my chest like a supernova.
I spun around, my magic flaring to life. Dark energy crackled around my hands, shadows coiling up my arms like living serpents. My vision went red, my thoughts narrowing to a single burning point of fury.
Someone did this.
Someone hurt him.
Someone would die screaming.
The nearest pillar exploded.
I didn’t even realize I’d cast the spell until chunks of obsidian were raining down around me. The stone column shattered into a thousand pieces, the top half crashing to the floor with a sound like a mountain collapsing. Dust billowed into the air, and somewhere in the distance, I heard servants screaming.
Good.
Let them scream.
Let them know what happens when you fail to protect your King.
I forced myself to breathe, to think, to not just burn down the entire castle in a fit of protective rage. Destroying everything wouldn’t help him. I needed answers, needed to understand what happened, needed to fix this before—
Before anyone else found out.
The thought cut through my fury like a blade of ice.
If the other generals saw him like this, if word spread that the Demon King was incapacitated, the entire power structure would collapse. Challenges would come, coups would be attempted, and those filthy humans would see it as an opportunity to strike while we were weak.
I couldn’t let that happen.
I wouldn’t let that happen.
“Guard!”
I didn’t shout, but my voice carried anyway, echoing through the ruined throne room with the weight of absolute authority.
A low-level imp scrambled through the door, his eyes wide with terror as he took in the destroyed pillar and my clearly unhinged expression.
“Summon the Ancient Lich. Now. Tell him the King requires his expertise immediately, and if he values his continued existence, he will come alone and speak to no one.”
The imp nodded so hard I thought his head might fall off.
He vanished in a puff of sulfuric smoke.
I turned back to my Lord, kneeling beside the throne. My hand found his, my fingers wrapping around one massive claw. Even unconscious, even drained, he was the most magnificent being I’d ever seen. Raw power made manifest, a god wrapped in armor and fury.
“I’ll protect you.”
I whispered it against his knuckles, pressing my lips to the cold metal.
“Whatever this is, whoever did this, they’ll pay. I promise you that.”
Minutes crawled by like hours.
I stayed there, kneeling, one hand holding his while the other traced protective runes in the air around the throne. Barriers layered on top of barriers, wards designed to alert me if anyone even thought about approaching with hostile intent.
Finally, the doors opened again.
The Ancient Lich drifted in, his skeletal form wrapped in tattered robes that had probably been black a few centuries ago. He moved without walking, floating a few inches off the ground, his eye sockets glowing with sickly green flames. He was old, ancient even by demon standards, powerful enough that most creatures gave him a wide berth.
Right now, I didn’t care if he was death incarnate.
If he couldn’t help my Lord, I’d add his bones to the pile of destroyed pillar.
“Lilith.”
His voice was like wind through a graveyard, dry and hollow.
“You summoned me with quite the urgency. I assume this is not a social—”
He stopped mid-sentence, his glowing gaze locking onto the slumped form on the throne.
“By the Abyss.”
“Examine him. Now.”
I didn’t bother with pleasantries or explanations.
The Lich floated closer, his skeletal hands extending toward my Lord’s armored chest. Green light pulsed from his fingertips, spreading across the dark metal like veins of poison. I watched every movement, ready to obliterate him if he so much as scratched the surface.
His examination lasted an eternity.
Finally, he pulled back, the green light fading.
“This is… unprecedented.”
“Explain. In small words. Quickly.”
The Lich’s skull tilted, the flames in his eye sockets flickering with what might have been concern.
“His Majesty’s power is limitless. Truly, genuinely without boundary. I have never encountered a mana reservoir of this magnitude, not in a thousand years of study.”
“I know he’s powerful. Tell me something useful.”
“The issue is not his power, but his vessel.”
The Lich gestured at the massive armored form with one bony hand.
“His physical form, magnificent as it is, requires dormant periods to regenerate the mana circuits. The sheer volume of energy flowing through him at all times causes microscopic damage to the pathways that channel his magic. To prevent catastrophic failure, his consciousness has entered a hibernation state, allowing his body to repair itself.”
I processed that slowly.
“He’s… sleeping? That’s it? He’s just sleeping?”
“In the most technical sense, yes. But this is not ordinary rest. This is a fundamental biological function unique to beings of his caliber. He is too strong for reality to contain continuously, so his body forces periodic shutdowns to maintain structural integrity.”
Relief flooded through me like warm honey.
He wasn’t dying. He wasn’t poisoned. He wasn’t under attack. He was just… resting. Evolving. Becoming even more powerful than before.
“How long will this last?”
“Unknown. Hours, days, perhaps weeks. It depends on the extent of the damage and the rate of regeneration.”
The Lich floated backward, putting distance between himself and the throne.
“I recommend informing the council, adjusting defensive strategies, perhaps召んing the other generals to—”
“No.”
The word came out flat, final.
The Lich’s skull swiveled toward me.
“Lilith, the tactical implications—”
“The King is not weak.”
I stood, my wings spreading wide, shadows gathering around me like a cloak of living darkness.
“He is simply evolving, ascending to heights that lesser beings cannot comprehend. This is not a vulnerability. This is proof of his superiority.”
“I understand your devotion, but the other generals will need to know—”
“The other generals will know nothing.”
I took a step toward him.
He floated backward.
“This information stays between us, Lich. You will tell no one what you’ve seen here, you will not record this in your journals, you will not even think about it too loudly.”
“I am the court physician, I have a duty to—”
“Your duty is to serve the Demon King.”
My hand shot out, shadows coiling around his skeletal neck like a noose.
“And right now, serving him means protecting him from those who would see his momentary rest as weakness. Do you understand?”
The green flames in his eye sockets flickered wildly.
“You’re… you’re serious.”
“Dead serious.”
I smiled, showing teeth.
“Pun intended.”
The shadows tightened, cracks spreading across his ancient bones. He made a choking sound, which was impressive considering he didn’t have lungs, and desperately clawed at the dark tendrils crushing his throat.
“I understand! I understand, I won’t tell anyone, I swear on the Abyss itself!”
I held him there for another three seconds, just to make sure the message sank in.
Then I released him.
He dropped to the floor in a heap of rattling bones and tattered robes, gasping unnecessarily for air he didn’t need.
“Good.”
I brushed imaginary dust off my hands.
“You may leave. If I require your services again, I’ll summon you. Until then, forget you were ever here.”
He scrambled toward the door, moving faster than I’d ever seen him move.
The door slammed shut behind him.
Silence returned.
I turned back to my Lord, studying his massive form. Carrying him would be difficult, even for me. He had to weigh at least a thousand pounds in full armor, maybe more. But leaving him slumped on the throne like a discarded puppet was unacceptable.
He deserved better.
I stepped closer, sliding one arm under his knees and the other behind his back.
Magic flooded my muscles, strength enhancement spells layering on top of my natural power. I lifted, straining against the weight, and slowly, inch by inch, I pulled him into my arms.
He was massive, completely dwarfing me.
But I held him anyway, cradling his armored body against my chest in a bridal carry that probably looked absurd from the outside. I didn’t care. This was my King, my savior, my everything. I would carry him to the ends of the world if I had to.
I moved through the castle halls slowly, carefully, making sure not to jostle him.
Servants scattered at my approach, taking one look at my expression and deciding they had urgent business elsewhere. Smart. I was in no mood to deal with incompetence or questions.
A younger demon, some low-ranking soldier, made the mistake of walking too loudly.
His boots clacked against the stone floor, echoing through the corridor.
I stopped.
He froze mid-step, his eyes going wide as he realized his error.
“Walk more quietly.”
My voice was soft, gentle, wrapped in silk and malice.
“Or I will remove your legs and ensure you never disturb His Majesty’s rest again.”
He went pale green, nodding frantically.
Then he sat down on the floor and removed his boots entirely, tiptoeing away in his socks.
Better.
I continued toward the royal chambers, kicking open the door with more force than necessary. The room was exactly as he’d left it, the massive bed still unmade, the fur blankets tangled from when he’d woken up this morning.
This morning, when everything was normal.
This morning, before whatever this was happened.
I laid him down gently, arranging his limbs so he looked comfortable instead of broken. His head rested on the pillow, his arms at his sides, his massive frame taking up most of the bed.
Perfect.
I pulled the fur blankets over him, tucking them around his armor like he was a child needing protection from nightmares.
“Sleep well, My Lord.”
I brushed a hand across his helm, the closest I could get to stroking his hair.
“I’ll keep watch. No one will disturb you. Not Gorgara, not the council, not those wretched humans who think they can touch what’s mine.”
I moved to the door, stepping outside into the hallway.
A pair of guards stood at attention nearby.
“No one enters this room. No one speaks near this room. No one even looks at this room without my explicit permission.”
They nodded in unison.
“If I hear so much as a whisper, if I sense even the slightest disturbance, I will personally ensure your suffering lasts for decades.”
They paled but held their ground.
Good soldiers.
I closed the door, sealing it with layer upon layer of protective magic. Barriers that would alert me instantly if anyone tried to breach them, wards that would incinerate unauthorized intruders, locks that could only be opened by my hand.
He was safe now.
Hidden away from the world, from threats, from anyone who might see his temporary weakness and misunderstand.
Mine to protect.
Mine to guard.
Mine.






































