The Great Voyage: A Family of Two Swordsmen, the Younger Brother is Golden Lion

The Fusion Fruit is the Devil Fruit power of Douglas Bullet. That guy probably appeared in the Grand Line about ten years after God Valley, and then spent a few years in Roger's crew.

They are probably still in a country with endless war, begging, or serving as child soldiers clearing minefields.

Perhaps because God Valley was erased from the map, some Devil Fruits shattered due to the island's collapse and ended up at sea, where they were picked up by Barrett on a battlefield in a distant country.

Regarding the power of the Fusion Fruit.

Kazan's assessment of it: Although very strong, it is relatively clumsy.

It is not suitable for creating your own ultimate mythical beast.

Kazan immediately set his sights on the next Devil Fruit.

—Nature type, Cloud Fruit, Luck level: 25!

Logia-type abilities?

Clouds? A very dreamlike ability.

It's probably about controlling the clouds in the sky.

This ability would be suitable for Tian Yuexue, as the cloud suits her pure and untainted temperament.

Next, let's continue watching.

Soon, a red, peach-shaped Devil Fruit appeared before Kazan's eyes.

Kazan was pleasantly surprised by the appearance of the fruit.

—Paramecia type, Ope Ope no Mi, Luck level: 25!

A space-age surgical fruit!

This Devil Fruit, which later belonged to Trafalgar Law, is a Paramecia-type fruit. It allows the user to cut and swap objects at will within a certain space, using anything at will.

Moreover, because the Op-Op Fruit has the ability to grant humans immortality, it has been coveted by various forces, and the World Government once tried to buy it for 50 billion Berries!

Let it become the most expensive Devil Fruit in the world!

More importantly, after the Ope Ope no Mi awakens—

It's possible to make the 'scalpel' grow to an enormous size, and wielding a 40-meter-long First Generation Kitetsu is not a dream!

It can eliminate all sounds emitted by the wrapped target, which is equivalent to half a Silent Fruit!

Moreover, during the battle on Onigashima, the shockwave from the Op-Op Fruit demonstrated tremendous internal destructive power, even causing Linlin, who was in her Iron Balloon form, to suffer fractures in her elbow and ribs, proving its undeniable destructive force.

Even more importantly...

If paired with a doctor and a master swordsman, the power of the Op-Op Fruit will be maximized, making it a top-tier superpower for breaking through defenses!

Coincidentally...

Kazan is already the world's greatest swordsman!

Simultaneously.

Over the years, he has read countless books on medicine!

Although he doesn't have a medical license, he is definitely a top-tier doctor.

in this way.

With only two Devil Fruits remaining.

The Paramecia-type Devil Fruit, the Op-Op Fruit, became his only choice!

According to the principle of high or low luck value.

The Surgery Fruit still cannot be used as the main fruit for the mutation frame.

present.

Kazan casually touched a few Devil Fruits, increasing his Luck Value to the maximum of 100.

I promptly fed the Surgery Fruit to the Mutant Box!

"Ding! Detected continuous touches of the opportunity by the host, the chance of feeding the mutation box is now 100%!"

"Feeding successful!"

"The mutation box has been changed to include the abilities of 'Strength-Strength Fruit' and 'Op-Op Fruit'!"

"The current mutation probability is 70%!"

"Reward: Devil Fruit Fusion Card x1!"

hiss--!

Completed!

Kazan was once again filled with surprise upon hearing the system's announcement.

He never expected that he would receive a new affix fusion card!

The Phoenix Form has remained at level 50 because it lacks fusion cards!

He immediately incorporated the Phoenix Form entry into the overall Devil Fruit entry.

"Ding! The Phoenix Form has been upgraded to level 91 as the attribute increases! It also comes with the awakening of the Mythical Zoan Devil Fruit!"

"Azure Flame and Golden Emperor Flame separate!"

"Azure Flame: Possesses healing and resurrection abilities!"

"Golden Emperor Flame: Possesses the ability to burn the heavens and be reborn in flames!"

At this moment, Kazan no longer had the mind to think about what these abilities were for.

Having the Devil Fruit mutation frame is like gaining weight overnight; there's no time to fully digest the joy.

Let's continue looking at the last Devil Fruit.

A purple Devil Fruit with spiral patterns came into view.

Above the fruit is its basic information.

—Paramita type, Multiple Fruit, Luck level: 25!

Upon seeing this, Kazan was momentarily stunned.

Another bug-level ability!

Indeed, this trip to God Valley was well worth it!

The Gravity Fruit is an ability later mastered by Marine Admiral Fujitora Issho. It allows him to control gravity and even pull on meteorites floating in outer space. Gravity can be accumulated and used to crush and destroy everything in its path.

If it goes downwards, it can violently sink a person into the ground!

It can be said that the destructive power of the multi-fold fruit is great enough, and its expressiveness is also domineering enough.

And what do mythical beasts need most?

In Kazan's view, it's not wind, rain, thunder, or lightning; those are just borrowing natural elements. To truly unleash natural energy, a more specialized nature-based approach is needed. The real way to enhance mythical beasts to their limits is to utilize their physical constitution and maximize their destructive power.

monomer!

The ultimate skill is the greatest secret of the Mythical Beast!

The Power-Power Fruit!

The fruits of surgery!

A profusion of fruit!

It can be said that violence has been taken to the extreme!

Even the Magma Fruit, renowned for its powerful attack, is no match for the overwhelming destructive force of these three combined, let alone the power unleashed by a mutated mythical beast.

Kazan had a premonition that this fruit would grow infinitely towards invincibility!

Simultaneously.

The combination of multiple fruits and floating fruits should create an even more perfect experience!

With his current value at 0.3, Kazan suppressed his excitement.

Touch the Devil Fruit again to raise your luck value to the maximum of 100 points.

At the same time, feed the mutated boxes with lots of fruit!

"Ding! Detected continuous touches of the opportunity by the host, the chance of feeding the mutation box is now 100%!"

"Feeding successful!"

"The mutation box has been changed to add the abilities of 'Strength-Strength Fruit', 'Op-Op Fruit', and 'Weight-Weight Fruit'!"

"The current mutation probability is 100%!"

"Reward: Devil Fruit Super Fusion Card!"

"Super Fusion Card: The host can fuse all the abilities within the Devil Fruit's attributes into the strongest fruit, creating a god-level Devil Fruit with the potential to gather 'divinity'!"

Upon seeing this, Kazan could no longer remain calm!

According to the system's explanation, the 'Devil Fruit entry' is creating a completely new Devil Fruit, which will forge a new 'godhood'. From now on, it will no longer be multiple Devil Fruits, but will converge into a single, entirely new one!

A Devil Fruit that has never appeared in the world before, enough to make one a god!