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

Amid Zenitsu's cries, the three of them arrived at the plain again.

Still the same.

Three against one!

The Flame Pillar Rengoku Kyojuro drew out the flaming Nichirin Sword from his waist, faced the three people with a smile on his face, and spoke with a sharp gaze.

"Get ready boys, I'm coming!"

As he spoke, his momentum was fully released.

The cloak on his back moved without wind, and heat waves rolled around his body accompanied by sparks.

But Tanjiro reminded anxiously first.

"Mr. Rengoku, the Aguramaru is too sharp. If you fight with me, your Nichirin sword might be damaged."

In response, Rengoku Kyojuro's expression remained unchanged, and he said righteously, "Is that so, young man! But it's okay, just come at me!"

"Ok!"

Hearing this, Tanjiro no longer worried about it.

Holding the sword with both hands, he performed the Fire God Kagura, and the blade burst into brilliant flames!

"Is this the Breathing of the Sun? It's bright and warm as expected!" Rengoku Kyojuro laughed, ready to experience it for himself.

He has been waiting for this day for a long time.

But this also made things difficult for Zenitsu and the other two.

Rengoku Kyojuro swooped forward with a knife in his hand and went after Zenitsu who had been bullying him.

"Eh? Why did you come to me first? Why don't you come over here!..."

Seeing this, Zenitsu turned around and ran away.

"It's better if you fall asleep."

Inosuke, who was not far away, was really speechless. Even he couldn't help but complain.

"What's sleeping?"

Zenitsu turned around and was about to ask something, but was knocked away by a punch and fell to the ground again, unable to move.

There was only one sentence in his mind now.

Why am I always the one who's hurt?

"Be careful, boy!"

Rengoku Kyojuro restrained his strength just enough to prevent him from getting up and fighting for a short period of time without hurting him.

Then he did the same thing as before, dragging his body with a tail flame as he rushed towards Inosuke who was not far away.

"Are you coming at me? Why does it seem a bit familiar? Forget it!" Inosuke said, "If you dare to come, I will fight you," and rushed forward with two swords in hand.

The two faced off.

Inosuke performed various sword skills, but Rengoku Kyojuro did not use any sword skills. Instead, he just continued to use Breathing of Fire.

Combat with him in close combat was obviously honing Inosuke's fighting skills.

But it still didn't last long.

Inosuke was defeated and fell to the ground, unable to get up. This time he gave up thinking.

Lying on the ground motionless.

At this moment, Tanjiro was the only one left. When facing Rengoku Kyojuro, he spoke with a serious expression.

"Please give me some advice, Mr. Purgatory!"

Both sides used breathing techniques to compete on this plain.

Various sword skills were used.

Tanjiro's understanding of the Fire God Kagura has clearly taken a step further, and both the timing and power of his release have been improved.

Witnessing Tanjiro's improvement, Rengoku Kyojuro felt extremely proud, "That's it, boy! I will train you to be the strongest swordsman!"

“Thank you very much for your teaching!”

Tanjiro also responded with a smile.

Ajuramaru in the sword saw this scene and reminded at the same time.

"Tanjiro, take this opportunity to try to perform two breathing methods at the same time, to the extent that you can switch between them freely!"

Having said that, Tanjiro asked himself, "Can I really do it?" Thinking back to the battle at Nagegumi Mountain, he seemed to have done it!

With confidence, start to dare to try!

Tanjiro held the sword in both hands, and the blade burst into flames, "Fire God Kagura - Round Dance Flash!"

His body rushed forward quickly, he leaped up and spun in the air, then slashed down with the flaming Ajuramaru in an instant.

"A very powerful strike! But too slow!"

Rengoku Kyojuro stared at the sword with his resolute eyes, "Breathing of Flame - Form of the Fierce - Vortex of Rising Flame!"

He held the knife in both hands and swung it in front of him, and a large amount of flames formed a vortex of fire in front of him!

Tanjiro's sword was blocked by him.

The flames merged, but the next moment the blade that was originally burning with flames suddenly burst into a turbulent torrent!

"Water Breathing - Second Form - Waterwheel!"

Holding the knife in both hands, his body, which was originally in mid-air, suddenly flipped forward, and the water flow stirred by the blade turned into a circular wheel along with his body.

It looks like a waterwheel.

Crossing the flames' defense, he slashed through with a knife.

Rengoku Kyojuro had never thought of this, and subconsciously drew his sword to block, but facing the attacking Aguramaru, the Nichirin Sword was easily cut off!

When the two stopped.

Tanjiro quickly turned around and apologized frantically.

"I'm sorry Mr. Purgatory, I..."

But the words have not yet fallen.

Looking at the broken sword, Rengoku Kyojuro burst into laughter, "Hahaha, that strike just now was really beautiful, boy!

He is able to use two breathing methods so skillfully, he is worthy of being recognized by Ajuramaru! " He didn't care about the severed Nichirin sword in his hand.

All he felt was immense pride in Tanjiro becoming stronger!

He bent down to pick up his broken blade, turned around and smiled without changing his expression.

"Young man, keep getting stronger!"

After saying that, he turned around and was about to leave.

Tanjiro looked at his back, which was so bright and majestic, and couldn't help but said, "Mr. Purgatory, please rest assured, I will definitely become stronger!"

"Well, I believe you!"

These were the only words Rengoku Kyojuro left behind.

Ajuramaru, holding the sword, couldn't help but raise the corner of his mouth slightly as he looked at Kyojuro who was leaving.

According to the original plot, he will fight with Upper Moon Three Akaza on the Infinite Train, and eventually the Flame Pillar will die for everyone.

Fight to the death, and fall at dawn.

Die with hope in your heart, and uphold your justice and beliefs until your death.

A very charming person.

Ajuramaru had to admit that.

Judging from the current situation, if Tanjiro wants to grow up in a short period of time, he must master the breathing method.

All we have to do is hunt down evil spirits.

As for learning Zenitsu's Lightning Breathing for fusion enhancement, it will not be learned in a short time.

Ajuramaru's thoughts are now clear.

After Tanjiro is able to completely master the ability to switch between the two breathing methods at will, he will leave the Demon Slayer Corps headquarters to hunt down evil spirits!

I silently thought about it in my mind and began to plan how to act.

And the outside world.

Tanjiro and the other two returned extremely miserable and continued their training for today.

But the good thing is.

The next day.

After a long time, Koutsuka finally appeared outside the Butterfly House with a brand new Nichirin Sword.

He bumped into the excited Tanjiro head on, and he waved and greeted happily, "Mr. Koutsuka, how are you? Long time no see, my Nichirin Sword..."

But the words have not yet fallen.

Koutsuka, who was walking towards him, drew out a sharp blade without thinking and ran straight towards Tanjiro, cursing under his breath.

"How dare you break my Sun Blade? I will kill you! Die as a token of your sin!!!"