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Demon Slayer: I got reincarnated as the second Demon Progenitor

Joestarr
7
chs / week
The average realized release rate over the past 30 days is 7 chs / week.
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Synopsis
Jizen Tenshiji’s life was a relentless march of pain. Bone cancer devoured his strength, leaving him too weak to stand. Leukemia poisoned his blood, making every breath a struggle. Pancreatic cancer hollowed him out from within, ensuring his days ended in agony. He never knew peace only the slow, cruel decay of his body. When death finally took him, he expected darkness. Instead he woke to ruin, Bodies lay broken around him, the scent of blood and smoke thick in the air. Buildings crumbled like they had been torn apart by monsters. But the greatest shock wasn’t the destruction. Jizen Tenshiji had been reborn... as a demon... with a system??? .... Third Pov
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Chapter 1 - Pilot: I got reincarnated

"Urghhh What is this sensation"

A boy laying on the ground grunted as he slowly opened his eyes, around the boy there was nothing but death and destruction.

"What the hell happened why can I feel my body and legs whe.. ARGGGGGGHHH!!!!!"

The boy laying on the ground began to scream as suppressed memories began to resurface.

His name was Jizen Tenshiji the son of a fallen blacksmith and the fallen buildings were his home, the bodies around him were his clansmen who were executed by the Son of the Viscount of his district.

"I don't understand I don't understand what is wrong with me I feel like I am me yet not...me"

Jizen slowly calmed down and realised something, he felt incomplete however unified.

' Could it be that I am not possessing this body rather the soul from this world and the one from my past life became one'

Jizen slowly stood up from the ground and analysed his surroundings, he saw his father's corpse and felt boundless hunger.

His teeth began to elongate as they became fangs while his heart began to beat faster due to the increase of his blood flow rate and lastly his veins became more pronounced.

He slowly approached his father's corpse and his saliva began to drip to the ground, he grabbed his father's arm with the intent of consumption but his memories made him think otherwise.

Despite his flaws, his father was very supportive, loving and those warm memories made him know the anchor of his humanity.

[ Congratulations due to ignoring your primal urges you have awakened the Quest Renegade System Would you like to Bind Y/N]

' What do you mean by system are you trying to enslave me and blackmail me into submission

I don't even know where I am.. wait if I remember correctly this is the Taisho Era so that means It's the early 1900's and I am in Japan...'

[ Correct, the Quest Renegade System provides a quest and if you do it you receive a reward and if you don't want to do the Quest nothing happens]

Jizen felt confusion overwhelm him but he quickly collected himself and thought:

'Why do I have a system and why am I here'

[ Despite having bone cancer, Leukemia and Pancreatic cancer you helped the world strive while having no choice but to watch From the shadows

The God of fiction has decided to reincarnate you into the demon Slayer verse due to being a victim of his calamity and bad luck experiment and this is his way of apologizing]

'Demon Slayer...YOU MEAN THAT GRAPHIC NOVEL FILLED WITH DEMONS OH HELL NAH, I REMEMBER VAGUE DETAILS AND HOW AM I SUPPOSED TO SURVIVE WITHOUT GOOGLE'

Jizen almost wanted to cry as he heard the words of the system, he took a history and psychology major but he knew limited information when it came to technology.

'Hmm.. atleast I have a system that answers my questions so I might survive '

[ Lol I am not Chatgbt, my sole purpose is to generate quests not provide information, the information I provided you to this point was permitted

As a demon the system is very beneficial to you would you like to Bind with the system Y/N]

"Urghhh!! It's not like I have a choice, you scamming.." Jizen immediately paused his statement and said:

"Yes I would like to Bind"

[ Initiating binding with the Quest Renegade System... binding successful... issuing Quest

Quest:Kill your lover who brought you nothing but ruin and devour her heart

Quest Reward: Evolution to an incomplete Demon progenitor]

"Incomplete Demon progenitor...you mean something like Muzan" Jizen paused his breath, looked around and began to clench his fists as everything fell into place.

The annihilation of his clan was brought by his childhood sweetheart who his father disapproved, not only did she betray the Tenshiji clan she left with the enemy.

Jizen had consumed an old vial of liquid that his father considered a mythological elixir of wealth, what Jizen doesn't know is that this old vial is one of the trial blue spider lily medicine that made Muzan a demon.

Only Muzan had the perfected vial meaning he was no different from an ordinary demon the only difference is that he didn't have the Kibutsuji Curse.

"I... am sorry" whimpered Jizen as he slowly kneeled and picked up his fathers mutilated body, he then began to leave the town as he began to run heading for the mountains.

Each step on the ground made him feel alive because in his past life he lost most of his mobility functions, he kept running until he reached a tree.

"Father...I am sorry, I have let you down"

He slowly put his father's corpse on the ground and began to dig a grave using his claws, he continued to dig until he felt satisfied with the size of the hole.

He took his father's corpse and began to bury it, he closed the grave and bowed twice.

He then clapped his hands twice as he called on the attention of the Kami who was supposed to listen to his prayer, he then closed his eyes took a deep breath and said:

"O kami sama, I humbly call upon you.

Please watch over the spirit of Renge Tenshiji

May his soul find peace and harmony.

May his presence remain a blessing to me,

I offer my gratitude and respect to you"

Jizen took a bow as he finished his prayer, clapped his hands twice and let out a whisper of gratitude.

He left his father's grave and approached a large rock, he began to dig a cave for hiding as he looked at the sky and noticed that dawn was approaching.

' Those bastards are using carriages so they will only travel throughout the day to avoid bandits meaning they shall camp at night

The clouds are not dark and there is no wind from the southeast so it will not rain tomorrow and the wheel prints of the carriages will not disappear'

Jizen immediately entered the deep end of his cave and began to sleep as he slowly regained his energy and rest.

....