Start with Demon Slayer and create the strongest demon sword!.

[Ding! It was detected that Akaza had strong negative emotions before his death. Emotion points were obtained!

It is detected that Kokushibo has intense negative emotions before his death, and the emotion value is obtained!

Muzan Kibutsuji is detected, generating intense negative emotion values, gaining emotion values!

This time, a total of ghost power was obtained, and 30% will be fed back to the sword master! 】

When Ajuramaru heard the system prompt sound, he knew it.

It’s stable this time!

Tanjiro's power, which was originally still in pursuit, has undergone a qualitative change again, but the improvement is not much.

Perhaps we have reached the limit set by humans in this world!

But even so.

After the upgrade, Tanjiro can now even fight with Muzan Kibutsuji with his bare hands!

The speed bonus brought by using Thunder Breathing under your feet becomes faster and faster.

Damn it!

Why can the speed be increased? Was it deliberately playing a trick on me?!

Muzan was both angry and frightened at this moment.

It was similar to Yuichi Tsugumi before, but now the feeling it brings is not much different from Yuichi Tsugumi!

The only difference may be this monster.

It doesn't have that terrifying sword shape!

Muzan was still running in the woods, but there were eight more bone whips on the outside of his legs, which accelerated his escape even more.

And behind him.

Tanjiro put the Nichirin Sword in his hand back into the scabbard and concentrated his strength on his feet.

But just as he was about to take action.

Ajuromaru in the knife hurriedly reminded, "Wait an hour, the medicine should not be fully effective now, wait until it can't split before killing it, that's the safest time!

Now you need to make yourself look weaker, to prevent it from doing something desperate!"

Hear the words.

Tanjiro also thought it made sense, so he immediately gave up his plan to attack and just followed closely behind him.

Like the god of death that is urging you to take your life.

Let Muzan not be able to get rid of it no matter what!

Under the threat of death, Muzan felt more and more suffocated, so much so that he did not notice the changes in his body.

But later, Tanjiro's speed slowed down a little every once in a while, which gave it some hope.

Maybe it can hold out until this state ends!

Until an hour later.

The medicine worked completely.

This potion is specially made to suppress Muzan's self-destructive clone. Now is the time to kill it!

Ajuramaru in the sword also gave a reminder.

"Go ahead, Tanjiro, and vent your desire for revenge completely!"

"I understand!"

The voice just fell.

Tanjiro held his breath and concentrated, pouring strength into his legs. He activated the breathing of thunder and his figure was behind Muzan like lightning in an instant.

"what?!"

This completely shocked Muzan, who had originally thought that he still had a glimmer of hope, but he didn't understand why he hadn't done this before!

But it was too late to think about it.

It was about to self-destruct and split, and one of its arms swelled up instantly.

The next moment.

The arm returned to normal on its own.

"How...how is this possible? This is...the potion from before? There's more than just the potion that can turn me back into a human!"

Muzan only realized it at this time.

I have been plotted!

Every step was calculated, and now even its last means of escape no longer exists!

"hateful……"

Tanjiro, who came in front of it, also completed the sword form in an instant, and used One-Sword Rakshasa to cut out the twelve sword forms of Sun Breathing in an instant!

Pushing the limits.

Everything around, including the world, seemed to have turned gray, and time seemed to have stood still!

Only Tanjiro was still moving slowly.

Until the body can no longer bear it, until blood is flowing from all seven orifices and the muscles are torn apart, all of one's will is infused into this one knife!

Beyond the limits!

Hold the knife with both hands and cut forward!

"One sword Rakshasa!"

Ajuramaru also increased his ghost power output to the limit!

This time.

Muzan seemed to see Yoriichi Tsugikoku coming towards him with a sword again, and he looked the same as before, without any change.

Or.

This was a sword that was slashed thousands of years ago, but it only fell on it at this moment.

All of a sudden.

Twelve sword types were slashed out in an instant.

Under the lock of the transparent world, the seven moving hearts and five brains have nowhere to escape!

On the other hand, Muzan did not choose to sit and wait for death.

Instead, he used all his strength to create a huge mouth from his left shoulder to his right leg, and then he made a movement to gather strength.

Then there was a violent and turbulent shock wave that could even force human muscles to spasm!

But this doesn’t matter to Tanjiro now. He just wants to kill Muzan here and there at all costs!

Facing the shock wave, he slashed out with the Rakshasa sword!

The moment of collision.

Both sides were completely engulfed in smoke and dust until the dust settled.

Only then can you see it.

At this moment, Tanjiro's muscles were all broken and his clothes were soaked with blood, while in front of him was Muzan Kibutsuji who had been chopped into several pieces.

The brain and heart were chopped into pieces.

But even so.

Muzan Kibutsuji did not die immediately. Instead, he held up his head with his broken arm and looked at Tanjiro who was standing in front of him.

Perhaps it is life that is about to come to an end, or perhaps it is unwillingness that is at work, recalling the words of a certain Demon Slayer Corps lord.

The only thing that lasts forever is will.

At this moment, it also realized something, and suddenly spoke in a deep voice.

"I'm going to die soon. I haven't fulfilled my dream until the very end. You say I'm a monster... but the real monsters should be you!

My body is about to die, but you are different!

You are a monster who inherited the Breath of the Sun and has the sword as a helper! But even so, you still cannot break through the limit of your lifespan!

Become a ghost. I will give you everything I have. You will help me fulfill my dream. After all, you and Nezuko share the same blood...

Only you can become the strongest ultimate creature and become a god!"

This is indeed true.

After all, no one is more suitable for Muzan's blood than Tanjiro's family.

However, when faced with these temptations, Tanjiro simply sheathed his sword, leaned over to look at Muzan who was about to die in front of him, and decisively refused.

"I won't become a ghost. All I want is to peacefully reach the end of my life with my family and friends. That's enough for me."

After receiving this answer, Muzan really couldn't understand it and could only shout excitedly.

"No, you will regret it in the future! Accept my blood and become the strongest being, Tanjiro Kamado, you are the one chosen by God!"

But no matter how it shouted and tempted, Tanjiro remained unmoved, and all he could do was murmur softly in relief.

"Mom, Hanako, Takeo, Shigeru, Rokuta, I have avenged you..."