What if tanjiro reborned with all his memories and powers

Wrath of an Avenger – The Rewritten Fate Chapter 1: A Different Beginning

Tanjiro stood in the snow, his breath heavy, his heart pounding.

His family… was gone. The scent of blood lingered in the cold air.

In front of him stood Giyu Tomioka, the Water Hashira, sword pressed against his throat.

But unlike last time, Tanjiro wasn't filled with confusion or fear.

This time, he remembered everything.

The battles. The pain. The loss.

He had fought Muzan. He had won.

But it wasn't enough. Too many had died.

So he made a wish— a second chance.

And now, he was back. At the very beginning.

Giyu's expression was unreadable as he stared at the boy in front of him.

"You reek of demon scent," Giyu said, tightening his grip on his sword.

Tanjiro didn't panic. He knew what would happen.

He slowly raised his hands. "Please, listen to me," he said, his voice calm but firm.

Giyu's grip didn't waver. "Demons kill humans. That girl is a demon."

Tanjiro glanced at Nezuko, who stood behind him, trembling.

She was still a demon, but he knew how to save her.

"I swear to you," Tanjiro said, "I will destroy Muzan. I will kill every demon that threatens humans. And I will bring Nezuko back."

Giyu's eyes narrowed. "Big words for a boy who knows nothing."

But then—

Tanjiro moved.

In an instant, he dodged Giyu's strike, his movements too fast for an untrained boy.

Giyu's eyes widened.

"This speed—"

Before Giyu could react, Tanjiro had already stepped behind him.

"I know everything," Tanjiro said softly.

"Please, test me if you must."

Giyu hesitated.

This boy… was different.

And for the first time, Giyu lowered his sword.

The future had already begun to change.

Chapter 2: The Demon Slayer's Awakening

Giyu took Tanjiro and Nezuko to Urokodaki's mountain, just as before.

But this time, Tanjiro didn't struggle.

He already knew the training.

One month passed in a single day.

Urokodaki watched in disbelief as Tanjiro mastered techniques instantly.

"This is impossible," he murmured. "This boy…"

In just 24 hours, Tanjiro broke every record.

He surpassed every previous student.

And when the Final Selection came—

He cleared it in a single night.

Tanjiro became a Hashira-level warrior in just one day.

And the world of demons was about to change forever.

Chapter 3: The Rise of the Demon Hashira

The other Hashira didn't believe it.

A boy who had just passed the Final Selection was already as strong as Gyomei.

Oyakata-sama gave him a special rank—

The Demon Hashira.

A title only given to the strongest warriors.

There were only two—

Gyomei Himejima.

And now, Tanjiro Kamado.

But Tanjiro wasn't done.

He had one goal—

To kill every Upper Moon before the final battle.

And he would do it alone.

Chapter 4: The First Battle – The Lower Moons Fall

Muzan had underestimated the Demon Slayers.

Tanjiro knew this.

So before Muzan could react—

He hunted down every Lower Moon.

And in a single night—

He wiped them all out.

Muzan, for the first time, felt fear.

But he didn't know—

The true terror was yet to come.

Chapter 5: The Mugen Train – A Silent Storm

When Rengoku faced Akaza—

Tanjiro was there.

But this time, he pretended to struggle.

He let Akaza believe that he was barely holding on.

But in truth—

Tanjiro could have killed Akaza instantly.

But he knew—

If the story didn't unfold as before, Muzan would go into hiding for centuries.

So he played along.

And when the battle ended—

Rengoku survived.

But Muzan still didn't know Tanjiro's true power.

Chapter 6: The Entertainment District – Strengthening the Future

Tanjiro made sure Tengen didn't retire.

He trained Inosuke and Zenitsu to Hashira-level strength.

And when the battle against Gyutaro and Daki began—

Tanjiro held back, allowing his friends to shine.

But in the end, they all survived.

And Muzan still had no idea.

Chapter 7: The Swordsmith Village – True Mastery

Tanjiro reached the level of Kokushibo.

He mastered the Transparent World.

And in the final battle—

Nezuko became immune to the sun.

But Muzan still didn't know the truth.

He only saw Nezuko as the perfect Upper Moon candidate.

And that was his biggest mistake.

Chapter 8: The Hashira Training – Preparing for the End

Tanjiro trained everyone.

Muichiro and Gyomei fully mastered the Transparent World.

Zenitsu and Inosuke became Hashira.

Sanemi and Mitsuri learned to use the Demon Slayer Mark.

And when the final battle began—

No one was weak.

They were all ready.

Chapter 9: The Final Battle Begins

Muzan attacked, believing the Demon Slayers were weaker than before.

But Tanjiro had planned everything.

All Upper Moons were killed before dawn.

The Demon Hashira stood at full strength.

And then—

Muzan made his final mistake.

He underestimated Tanjiro Kamado.

Chapter 10: The Last Stand

Muzan used all his power—

But Tanjiro had planned for this.

He divided the Hashira into two teams:

Team 1 – Defense (led by Giyu): Focused on stopping Muzan's attacks.

Team 2 – Offense (led by Tanjiro): Focused on breaking Muzan's body.

And as the sun began to rise—

Muzan was cornered.

He tried to run—

But he couldn't.

Because Tanjiro's last Blood Demon Art held him in place.

And when the first light of dawn touched his skin—

Muzan screamed.

And then—

He was gone.

Chapter 11: The Final Choice

But as Tanjiro stood victorious—

He felt no joy.

Too many had died.

Too many had suffered.

So he whispered a final wish—

"Give me one more chance."

And once again—

He was given two choices.

Live peacefully, but die at 25. Restart the journey. Save everyone.

Tanjiro smiled.

He already knew his answer.

And when he opened his eyes—

He was back.

Standing in the snow.

Facing Giyu Tomioka.

The journey had begun again.