One Piece: Burning the Prison Clothes in the Setting Sun, Mihawk is dumbfounded.

That's what they say, but Dunn has no intention of leaving Shimotsuki Village immediately.

After all, we've already paid, so leaving now would be a loss.

"Is what you're saying really possible?"

A few days later, Koushirou looked at Dunn with a headache.

He used to be so composed, how come he suddenly became so unreliable?

Manipulating temperatures of 15 million degrees Celsius as if wearing an outer garment, covering the blade?

What kind of knife can withstand such high temperatures?

Moreover, how could there be such a hot flame?

"That's why I'm asking you for advice!"

Dunn looked at Koushirou with a serious expression.

Ok?

Koushirou took a deep breath to suppress his speechless emotions.

"I'm sorry, I don't understand what you're saying either, but I can tell you about the 'slashing strike' you mentioned. It is indeed possible. Many swordsmen on the high seas can wrap their swords with Haki and unleash powerful slashes."

Such a slash might be similar to the gentle slash you mentioned.

After listening to Koushirou's words, Dunn scratched his somewhat long hair, sighed, and got up.

"Thank you, curator!"

"No need for thanks, I haven't been of much help to you. But I can demonstrate the 'sweeping slash' you mentioned, though of course it won't have the power you described."

After saying that, Koushirou got up and left. A moment later, he came back in, carrying a sword with a pure white scabbard and hilt.

"Let's go, it's not convenient here!"

After saying that, Koushirou turned around, and Dunn followed him.

Before long, the two stood on a cliff on the other side of the island, looking up at the boundless sea.

Koushirou took a deep breath, assumed a fighting stance, and placed his right hand on the hilt of the Wado Ichimonji sword. The next moment, Armament Haki covered his hand and spread along the blade of the Wado Ichimonji sword.

Dunn watched quietly.

In an instant, a sword draw slash followed by an extremely fast strike, then the sound of the sword being sheathed.

The flying slash carved a sword mark over a hundred meters long across the sea, which disappeared in an instant.

"No, according to you, it should be a vertical cut."

Koushirou shook his head slightly.

What he just did was actually a diagonal slash.

"Okay, I think I understand."

Dunn called out to Koushirou, who was still trying.

Different worlds produce different effects from different techniques.

The kind of flames that Yamamoto, the old man from another world, could reach tens of millions of degrees Celsius is still too difficult to achieve in this world.

Especially since he wants to reach that level by relying on the power of the fruit.

Of course, if such a high temperature could really be achieved, then there would be no need for any special techniques at all.

No matter who it is, they can't withstand temperatures of tens of millions of degrees.

No, it doesn't even need temperatures of tens of millions of degrees. Temperatures of a few hundred thousand or tens of thousands of degrees are already unbearable for anyone.

Even with the superiority of the Flame-Flame Fruit, the magma of the Magma-Magma Fruit is only one or two thousand degrees.

A temperature of several thousand degrees is enough to vaporize magma.

However, the flames he's currently controlling are only around 500-600 degrees Celsius. Of course, by adding other controls to the flames, the temperature can be increased.

Since it's the Flame-Flame Fruit, the focus of its development should be on increasing the temperature.

Dunn sighed.

All those techniques are useless; if the temperature isn't high enough, the power will be very limited.

With that thought in mind, Dunn's gaze fell on the data panel that had been brought up.

【Flame-Flame Fruit (Fully Mastered): A powerful Logia-type Devil Fruit ability, granting the ability to create clones and control flames; continuously enhancing the body; the fruit's drawbacks have been eliminated (weaknesses and the host soul); current fruit development (25%)

Complete mastery?

So his approach is correct?

Seeing the changes on the data panel, Dunn suddenly realized.

However, with only 25% of the development complete, and it's still just an idea, without even finding a concrete way to increase flame temperature, it's already been fully mastered.

Perhaps, this complete mastery was not the complete mastery he imagined.

Dunn was somewhat puzzled.

Koushirou, having put away his stance, looked at Dunn, who was deep in thought with a furrowed brow, and left quietly without disturbing him.

Dunn noticed Koushirou's departure, but he didn't put his mind at ease.

The changes on the panel made Dunn fall into deep thought, and he pondered how to increase the temperature of the flames.

compression!

This is the simplest way.

If the flame is compressed, the temperature of the flame will definitely become extremely high.

Dunn raised his hand, and a fireball the size of a watermelon floated above his palm.

How to compress?

Is it imposing?

Dunn looked at the fireball in his palm and tried to cover it with Armament Haki.

But the result was not satisfactory.

Armament Haki and the flames on his hands cannot touch.

After several attempts, Dunn flicked his wrist and extinguished the fireball in his hand.

Either his Haki is too strong to cover flames, or his Armament Haki training is not yet up to par.

If it's a physical elemental representation, perhaps it can be covered with Armament Haki.

For example, Swamp Fruit, Rock Fruit, and Ice Fruit.

But if we have to say something, Burning and Glitter don't have a physical form after they've been elementalized.

However, the Mochi Mochi Fruit, which is very similar to Logia-type Devil Fruits, can be covered with Armament Haki after creating the Mochi Mochi Arm.

If this method doesn't work now, is there another way?

Dunn had a sudden inspiration and thought of another way.

In an instant, a fireball reappeared in Dunn's hand.

When he first ate the fruit, he manipulated the flow or rotation of the flames to speed up the roasting of the bird eggs.

Increased flow will absorb more oxygen and accelerate combustion, or in other words, it will make the plasma that forms the flame more active, thus creating higher temperatures.

The fireball flowed in Dunn's hand and then began to spin.

Several blade-shaped ribbons formed from orange-red flames or plasma fluid. The orange-red flames faded in color, and as the rotation speed increased, a fireball that was entirely orange-yellow and contained scorching white flames appeared in his hand.

wipe!

Isn't that a Rasengan?

Does this work too?

The white flame had a temperature of at least over a thousand degrees, meaning the method was successful.

However, the spinning fireball in his hand now looks exactly like a Rasengan with flames added.

With that thought in mind, Dunn threw the fireball in his hand directly into the sea.

Then, the spectacular scene did not occur. After flying only a dozen meters, the spinning fireball completely burned up.

Yes, it's a long and arduous journey.

Dunn was not disappointed, nor did he continue trying; he turned and went back.

And the data-driven dashboard has changed again.

[Flame-Flame Fruit (Basic Mastery)]

The development rate also became 31%.

Is this considered an advancement?

So, once you find a new way to develop the Flame-Flame Fruit, as the development progresses, you will eventually master it and have complete control over it. And then what?

Could it be an awakening?