Inside a lavish Japanese-style house, in a brightly lit room, a deathly pale teen who appeared to be no more than 13 years old was going through a shocking revelation of his life.
""…What is this?…I was/am a fictional character?"" Two distinct voices resonated inside the young teen's mind.
Two different minds: one who aspired to perfection and another who embraced imperfection...
Soon, the right side of the teen's face morphed and gained demonic traits. His right eye took on a darker plum-red hue. The depth of this eye invoked a cold feeling, sparkling with murderous intent.
Meanwhile, the left side retained the former human features of the face, but the left eye showed more humanity than the right eye.
It was as if both sides of the face belonged to different individuals.
"You dare steal my body? Human?!" the right side said.
"..Go fuck yourself, rip-off Michael Jackson!" the left side retorted while maintaining a calm demeanor.
The right side was able to access all of the left's memories, while the left could access the right's memories as well.
"So what does it feel like to have wasted centuries and yet unable to realize the truth of the Blue Spider Lily? How slow are you? For fuck sake, you have five fucking brains!"The left insulted the right with all of its frustrations.
The right side remained silent, while being in a state of shock.
The right spent centuries searching for the Blue Spider Lily—the mythical flower responsible for his demonization and apparent weakness to sunlight.
According to the new memories the right side gained from the left, it realized how fickle fate could be.
Apparently, the flower he put all of his effort into searching for only bloomed two to three days a year and only during the daytime.
There was no way for him to find the Blue Spider Lily if he couldn't go out in the sunlight in the first place.
Hundreds of years of effort spent searching were now for naught.
However, the right did not let itself submerge into the sea of depression.
Depression was nothing but a sign of weakness for the right side.
He hated weakness and so it was natural for right to overcome depression easily.
With this newfound information and several key memories from the left, the right one felt confident in attaining all of its desires.
Conquering the sun? Becoming a perfect being? Information about the so-called protagonist? The demon slayer corps?
The right could recall everything what left knew about this world.
The right no longer saw any use for the left one and decided to end the left once and for all.
Naturally, the right one was none other than Muzan Kibutsuji, the immortal demon king who hated the very concept of change.
In contrast, the left one was a soul from another reality. The identity of this soul was Makkari Aozaki, a man gifted with incredible good looks. Naturally, Makkari abused his looks to get what he wanted in life.
Makkari was also a devoted anime/manga lover. And he knew quite well whose body his soul was trying to take over.
After all, it was a character he liked but was very disappointed in the actions of this character named Muzan in entirety of Kimetsu no Yaiba.
Till the end, Muzan remained a coward who hid behind his demons.
He had several opportunities to end Tanjiro's life.
He also had access to fucking broken cheat power that was Nakime.
Her blood demon art was literally a limitless dimensional fortress.
If Muzan used the full potential of this blood demon art before the events of Infinity Castle Arc, he could have won.
Makkari was very frustrated with Muzan's actions. And if he took over Muzan, he would try to do better than this failure of a demon.
Now coming back to reality…
'Shit! Shit! Shit! If I don't do anything, this demon fuck will kill me soon! Think, Makkari, think!!!'
At that moment, Makkari had an idea. He was not sure if it would work, but he had to take the risk.
One thing in his favor was that if he wanted, he could take control of the body for a short amount of time before Muzan fought back to counter his control.
And Muzan was unaware that Makkari could take over his body even if it was just for a second.
'A second will be more than enough! It is now or never!'
With that, Makkari focused all of his being into gaining control over the body. He succeeded; the right side was no longer demonic, and the body resembled the former appearance before his soul tried to take over Muzan's body:
'Burst!'
Just then, the teen's body exploded in a violent mess. Blood splattered all around the room. Invoking a horrific scene with iron-like stench of blood all over the room.
Makkari had just attempted to rupture the whole body of Muzan.
Why did he do this if he knew Muzan could just regenerate back?
Since Muzan was the most powerful demon king, wouldn't he regenerate back quickly?
That should have been the case, but what Makkari did was simply abuse this aspect.
The body is the soul, and the soul is the body.
Sounds familiar?
It's a concept Makkari remembered from the Jujutsu Kaisen world.
But why would Makkari do this, given Jujutsu Kaisen was a different anime and its logic should not apply here right?
Well, it was all a gamble.
After Muzan's body ruptured, it started regenerating back almost instantly.
However, the being who was now standing was neither Muzan nor Makkari. It was somebody else entirely.
A young man who appeared to be in his late twenties, standing six feet two inches tall, with messy white hair, plum-red eyes, deathly pale skin, and a devilish grin adorning his beautiful face.
"The body is the soul and the soul is the body? Brilliant, Makkari! You genius fool! Unfortunately, I am not you or Muzan!"
"I am better than both of you."
What Makkari did was harm Muzan's body, and this would inevitably affect the soul as well. Since the body and the soul are equal (according to his hypothesis), and exists in different realms at the same time, both could affect each other in one way or another. And so by harming Muzan's body to a bloody pilp, it would temporarily cause his soul to be damaged before his regeneration kicks in. And according to him, the time interval for Muzan's soul to recover was enough for Makkari to override Muzan's soul information over the body, effectively giving Makkari full control over the body.
It seemed that Makkari underestimated Muzan. What he did not know was that Muzan's regeneration was way faster than the overriding process so his plan ultimately failed.
However, this ended up casuing a new change into their beings. What happened was that Makkari's soul merged with Muzan's, causing the emergence of this new being.
The synergy was perfect. Both souls fused to become one, giving birth to a new being.
This 'new' Muzan looked at the moon with his beautiful plum eyes which appeared brighter than before.
"Demon, huh? This will be fun."
"I can't wait to meet you my dear…Nezuko…" said 'Muzan' with a massive grin.
***
Right now, he had to pinpoint exactly where he was in the plot. The last major event was the death of two Upper Moon Six members, Daki and Gyutaro, at the hands of demon slayers.
It was clear he was long past the events of season 2. He also recalled that former Muzan ordered Gyokko to confirm his lead about the Swordsmith Village roughly a month and a half ago.
As per his understanding of the plot, Gyokko took about two months to find and then attack the village with Hentengu.
"So, I have about 15 days before the start of the Swordsmith Village arc, huh?" he muttered to himself, a cold smile creeping across his face.
"This will be a massacre hahahaha." Lost in his twisted dark fantasies, the main reason Muzan wanted to destroy everything in the Swordsmith village is to severely cripple the Demon Slayer corps.
To combat an organization effectively, a strategic approach involves targeting and eliminating the crucial resources vital for the organization's operations.
In this case, the swordsmith village was a place filled with many swordsmiths. It was also the place where most of the Nichirin swords were made.
He had decided to get rid of the demon slayer corps. Unlike former Muzan, he did not underestimate the current pillar hashiras.
Also, since there is an existence of a supposed "chosen one" in this world, he had to get rid of him before things became hectic.
Worst case scenario he would isolate himself in the Infinity castle and let them die of their demon slayer mark's curse.
Lost in thought, Muzan was suddenly jolted back to reality by the abrupt change of sight before him.
The space before him twisted and distorted, revealing a floating message in the air:
[Ding! You have been chosen as the host of the Heaven Devouring System. Welcome, Host!]
Looking at the message displayed in front of him, he widened his eyes in shock.
Even though his birth was a result of the merger of a reincarnator with the previous Muzan, the chance of him supposedly awakening a 'system' was beyond his wildest imagination.
"Is this what I think it is? System?"
This changes everything. Thought Muzan.
He was still unsure if this was an illusion but he quickly discarded that thought. If Makkari could reincarnate in this world then anything is possible.
Making up his mind to investigate this 'system", he began to formulate various conclusions.
One, this might be a trap to become a plaything of a higher entity.
Two, this System was a parasitic existence that needed a host for it to grow in strength.
Third, he had no idea.
Besides, was this system responsible for the arrival of Makkari into the body of Muzan? If yes then why didn't it help Makkari to outright subdue Muzan's consciousness and make Makkari the new Muzan?
Why did it wait till he was born because of the merger? He was very suspicious of this system thing.
"System? Can you speak?"
[Answering to the host, the System does not have a consciousness yet. It gives an appropriate response based on the host's question in a Q&A format.]]
"I see…"
"Were you responsible for Makkari's arrival to this world? Why did you not help him take over Muzan's body? Why wait for my birth?" He finally decided to ask the question that was bugging him the most.
[Yes, the system was indeed responsible, but Makkari was not the chosen host, you are.]
He narrowed his eyes at the system's response. The system was not telling him the whole truth. It was hiding something.
He decided to continue his integration with the system.
"What can you do? What functions do you have? Do I need to do quests or something?"
Given that the name of this system was the Heaven Devouring System, he had no idea what he was supposed to do.
Did he have to go up against the gods or something? But this world didn't have gods…or so he thought?
[Right now most of the functions are locked. You must complete the first quest to increase your authority to access the system. ]
"Quest? What if I don't want to do it? " Muzan already had a rough idea about the quest function. If he finished the quest, as a reward, he would gain access to core functions of the system.
There was no free food in this world. He understood that the system wanted him to do something, and only after completing the quest would he get rewarded.
But if he accepted the quest, naturally he would also have to face a penalty right? What if he refused to do it? Would the system force him to take it?
He hated even the thought of becoming a plaything of a higher existence. It disgusted and angered him to no end.
How dare someone play with his life?
[Finishing the first quest is essential for your growth. The system is capable of making you the apex predator of whatever world you are in. If you deny it, you will also lose the opportunity to travel to different worlds. Are you willing to give up such an opportunity?]
Comprehending the system's words, he felt like a frog trapped in a deep well, unable to escape without outside help—in this case, the system.
If the system has the power to let him travel to different worlds, how can he ever let go of such opportunities?
Countless worlds to plunder, countless divine milfs to conquer, just the thought made him so excited that he got an erection.
"Tell me about the quest system." He continued.
[Ding! First Quest triggered!]
[Quest: The One Who Thinks He's Perfect
Objective:
Look who it is, the Demon King who can't even handle a little sunlight. Your enemies are laughing at you, calling you a coward despite your so-called power. Time to prove you're not just all talk. You need to:
- Obliterate the Demon Slayer Corps (if you can)
- Defeat all Pillar Hashiras and make sure they can't ever fight back (without breaking a sweat, right?)
- Conquer your biggest weakness: the sun (good luck with that)
Time limit: 2 months (starting today)
Rewards:
System Rank Up: Unlock all basic functions of the system and get the answers you seek. Other parts of the reward will be revealed upon quest completion (if you make it).]
"…" Why did he feel like the system was mocking him the more he read the quest?
Ignoring the mockery, his thoughts shifted to the objective.
The objectives of the quest were the main goals the previous Muzan had. But he had a limited time frame to complete the quest.
The most difficult thing was conquering the sun. Now that he knew the truth about the Blue Spider Lily, it would make things easier but finding it within this timeframe was nearly impossible.
'Nezuko is really my golden ticket huh…' Muzan thought with a smile spreading through his face.
"I accept the quest."
[The two-month timer has started. The system wishes the host the best of luck!]
***
At the mountain's peak, surrounded by wisteria, stood a traditional Japanese mansion. A wooden veranda wrapped around it, leading to a Zen garden with white gravel, bonsai, stone lanterns, and a pond with large stones.
Inside one of the mansion's rooms, a man in his twenties abruptly sprang up from his futon. His once partially rotted face now bore the full weight of the curse, leaving him barely able to see the light.
"W-What was that vision? Muzan Kibutsuji... conquered the sun?" he exclaimed in horror.
***
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