Demon Progenitor Development Project

As time went by and reached the Warring States period, the Demon Slayer Corps was formed, and the Ubuyashiki family, with the secret assistance of Ubuyashiki Eiji, stumbled along the way to pass on its legacy.

Meanwhile, he secretly kept an eye on Muzan Kibutsuji, who frequently moved house.

To prevent the tragic situation of unexpectedly becoming neighbors with a rebellious son.

Under the torment of Muzan Kibutsuji, who often killed demons he disliked due to his bad mood, Eiji Ubuyashiki learned a lot of information from the demons who came one after another, and thus learned about Muzan's crazy ideas.

resurrection?

Whom can his son, who has no friends at all, resurrect?

There was no other choice but to play the troublesome character of Fujiwara Shugo.

Ubuyashiki Eiji slowly typed a question mark, thinking that his son had lost his mind.

A dead person is a dead person; even the progenitor of ghosts can only transform into a living person!

Then, he saw Fujiwara Shugo stand up, talking and laughing.

Ubuyashiki Eiji:? ? ?

What's so special about this? Love can create miracles?

Ubuyashiki Eiji was completely dumbfounded, never expecting that he would have to kill someone a second time.

In any case, that troublesome guy, Shugo Fujiwara, is back in the game.

We must be vigilant!

Ugh?

This shuug doesn't taste right, why are you being so silly?

Could it be that something went wrong during the resurrection? No, no, is this really a resurrection? Or is Muzan Kibutsuji just deceiving himself?

In any case, the level of threat has decreased.

However, information about Muzan Kibutsuji is too difficult to obtain.

Even with just that little bit of information, Ubuyashiki Eiji spent over a hundred years slowly gathering it under various aliases, striving to remain undetected.

We need to find a ghost to act as an inside man.

Kisaragi-hime is a good choice; she's a fence-sitter and constantly under threat to her life from Muzan, especially after Fujiwara no Shugo's resurrection.

Kibutsuji Muzan would definitely be wary and disgusted by this female ghost who is posing as Fujiwara Shugo's wife.

Kisaragi-hime, who had been courted: ...dared not move.

Kibutsuji Muzan's killing of demons and humans was extremely random.

Muzan Kibutsuji's neuroticism is getting worse and worse. Any word or action can trigger his sensitive nerves, causing him to go on a killing spree.

Princess Kisaragi was genuinely afraid.

Spy work is a tough job, and anyone who wants to do it can do it. As a former royal princess, how could she not understand how miserable such a person is?

Being discarded after serving one's purpose is all too common, and her greatest value to this unknown force is that she can infiltrate Muzan's ranks.

If she were discovered, trying to run away would mean losing her greatest value. She had no doubt that this force would push her out as a shield and then hide in the shadows to continue causing trouble.

So... we have to pay more!

As a woman with a more delicate and sensitive understanding of emotions, Kisaragi Hime knew how obsessive Kibutsuji Muzan was about Fujiwara Shugo.

The fact that he was dug out even after death and slept in the same coffin as the corpse is enough to illustrate Muzan Kibutsuji's mental state.

This unknown force needs to be revealed more, at least enough to protect her from the wrath of Muzan Kibutsuji!

However, she never expected that she would still be killed in the end, and it was her deceased ex-husband who gave the order.

Ubuyashiki Eiji never expected there would be such an outrageous guy as Yoriichi Tsugikuni.

The Demon Slayer Corps' fighting strength is too weak. Even with the Nichirin Blade and the aid of wisteria poison, they still have a hard time dealing with supernatural demons.

Just when Ubuyashiki Eiji was having a hard time, Yoriichi Tsugikuni, the originator of breathing techniques, appeared.

At that moment, Eiji Ubuyashiki's eyes lit up.

Having thoroughly understood Yoriichi Tsugikuni's personality, Eiji Ubuyashiki was quite confident that he could get the other man to follow him.

As for whether Yoriichi Tsugikuni will pose a threat to him.

He's not a proper ghost, he doesn't need to eat people!

Moreover, Yoriichi Tsugikuni is a good person, a good person who would forgive a repentant demon (Tamayo in the original work).

What? Yoriichi Tsugikuni, you don't want to join the Demon Slayer Corps and contribute to the cause of slaying demons!

Oh well.

The Ubuyashiki family, as the patriarch of Mitsuyoshi, only requested that the other party instruct the Demon Slayer Corps members in breathing techniques.

Ubuyashiki Eiji's choice was: since you won't join, then there's no other way but to create hatred.

However, there are very few ghosts scattered throughout the country.

Muzan Kibutsuji no longer enjoys creating demons; his blood is constantly supplied to corpses, and he has little interest in transforming them into demons.

Of the demons created, Muzan killed a batch, the Demon Slayer Corps killed a batch, Jinko took a batch to work as miners, and only a few remained.

The surviving demons, because of Shugo's ideas, were gathered together for a re-education, and are now suffering the harsh realities of knowledge.

There's no way a ghost could be lured to a small village.

Eiji Ubuyashiki had no choice but to manipulate discarded materials to incite hatred.

The so-called discarded materials are actually ghosts that have been captured.

Muzan Kibutsuji really doesn't care much about the demons he transforms into; it's common for him to forget about them.

It's understandable that they were taken away to be exploited for experiments.

Moreover, in Muzan Kibutsuji's perception, these materials were already dead.

The material, once squeezed dry, is like something that has been dried out in the desert for many years, leaving only skin and bones.

Ubuyashiki Eishi needed extra filling, at least to make him look a bit like a ghost.

He didn't want to either. If it weren't for wanting to kill Fujiwara Shugo, he would have to dig for gold from the sand for every little bit of original blood. It was exhausting, and he often came up empty-handed. Now he even had to stuff the sand back in.

As a result, that useless guy Yoriichi Tsugikuni couldn't even kill one of them!

Instead, they were drawn in and wanted to get rid of him, the mastermind behind it all.

Moreover, it seems that Fujiwara Shugo has returned to normal.

Ubuyashiki Hideshi: %$@&￥

Later, the loosely organized ghost became an organized ghost, making it even harder for him to hide.

With no other option, Eiji Ubuyashiki had to be even more cautious, only daring to operate remotely and no longer daring to go out.

After the Demon Slayer Corps was severely suppressed, he dared not step forward.

As soon as he made his move, Fujiwara Shugo dared to kill him.

However, Fujiwara no Shugo needs to be dealt with, as does Kibutsuji Muzan, but Muzan is valuable enough that we can't bear to kill him.

Kibutsuji Muzan is a brainless idiot; dealing with him is too easy.

It's rare to find someone like Fujiwara Shugo.

So, after years of preparation, Ubuyashiki's initial plan was to first strike at the Fujiwara family, frame them in various ways, and incite their retainers to betray them, keeping Fujiwara Shugo busy.

Then, use the blue spider lily and the Demon Slayer Corps as bait to lure the opponent here and capture them. If that fails, the only option is to kill them.

Clearly, things spiraled completely out of control. Ubuyashiki Eiji, whose life was abruptly overturned, is now trapped in his old home, and Fujiwara Shugo is about to come and take his life.

How could someone like him, who at most plays tricks and schemes behind the scenes, fight against Fujiwara no Shugo, who is capable of going toe-to-toe with Tsugikuni Yoriichi?

How many lives does he have?

They're not enough to kill him.

Run if you can; as long as you're alive, you can always find a way to rebuild.

The old schemer wasn't ashamed at all for fleeing without a fight.

If you can't escape, then you can only fight desperately.