At present, Sherlock's limit is a six-fold mirror fusion, and this is barely used after knocking on the excessive amount of Insanmona's overdraft.

But that terrifying destructive power, just the aftermath of fighting Blackbeard, was already able to destroy most of the Demon Ancient Town.

Every time the mirror fusion is heavier, its power is multiplied exponentially, and the spiritual power consumed is also rising.

Sherlock couldn't imagine how powerful it was to be able to perform the Ninefold Mirror Fusion and keep it alive for eternity.

(Could it be because of the fusion of Devil Fruits?)

(Wait, it seems that in addition to the spiritual power of the capable person himself, there is also a way to maintain mirror fusion for a long time...... ）

A startling thought crossed Sherlock's mind, and with a scarlet glow, a destructive spear appeared in front of the sorcerer.

God Killer Gun - Gangenir.

Sherlock reached out and gently stroked the cold body of the God Killer Gun, his gaze gradually becoming strange.

This spear captured from the small garden, the sorcerer used it to defeat strong enemies several times, but at this moment, a certain glasses suddenly felt that this spear was so unfamiliar.

Why is it that every time I use mirror fusion on this god killing gun, there is always a strange sense of disobedience?

Why is the Divine Killer so much more powerful than other mirror fusions?

Why does the six-fold fusion god killing spear awaken the thunder attribute and turn into a blood-colored thunder spear composed of pure lightning?

Why is this gun able to absorb lightning and increase its power?

Now, Sherlock finally got the answer:

God Killer Gun, its essence is also an eternal mirror fusion of the same!

The specific number of mirror fusions is unknown, but it definitely exceeds the sixfold, but due to the passage of time, its original terrifying energy has long been exhausted, otherwise it would not have concealed Sherlock's perception.

It also fuses Devil Fruits, and its abilities are definitely related to thunder and lightning.

"What's wrong? Sherlock. ”

Looking at the unusual behavior of a certain glass, Robin couldn't help but ask, "What are you doing with this spear?"

"It's fine, it's just that I suddenly figured out a few questions. ”

Sherlock came to his senses, waved away the Killer Gun, and continued to admire the mural.

The next few murals depict the prince holding the seven-star holy sword and leading his army to fight everywhere.

There are many, many enemies at war with the prince.

There are warriors who are entangled in static electricity and have physical characteristics that resemble hairy animals. Under the full moon, those scarlet eyes are full of the most primitive wildness and ferocity of animals!

There are samurai with the head of the moon and wearing haori, and their swordsmanship is superb, and the long swords in their hands seem to be able to kill all enemies in the world.

There were a legion of demons with huge bodies like mountains and fangs like demons, and compared to these real giants, the two giants in the small garden were like children.

There is a dragon knight army riding a huge flying dragon mount under the crotch, flying freely in the sky, the pure white knight armor is not a little variegated, and the dragon wings cover the sky and the sun.

There are the Fish-Men who lead countless giant sea kings, those overlords from the deep sea, even the smallest one has a terrifying size comparable to an island!

And also......

A thousand years ago, they were probably among the most powerful combat power in the world.

But in the face of the terrifying power of the Seven Star Sword, which transcended the shackles of the world, all resistance seemed to be futile.

Humans, dragons, or sea kings?

No matter what kind of enemy he faced, the prince did only one thing......

The sword is out, the black flame rises, and all beings surrender!

"What a terrible power, why is this sword so powerful?"

Robin muttered to himself, his blue and black eyes filled with shock that could not be concealed.

Combined with the information he had obtained from the Alabastan Funeral Temple, in terms of the destructive power of the army alone, the Seven Star Sword was probably not far behind the legendary ancient weapon, the Hades.

The gifted archaeologist had read a lot since childhood, and she recognized almost all the enemies depicted in the frescoes that were at war with the prince.

"The top of the Giant Clan are the Majin Clan, the samurai of Wano Country, and the Fur Warriors of Zou Island, and it is said that they will fall into a state of madness under the full moon. ”

"The Land of Knights - Warbler Grant's Dragon Knights, it seems that the creature dragon did exist a thousand years ago. ”

"And those giant sea kings......"

Thinking back to the historical texts he had read under the huge golden bell tower, Robin reached out and rubbed his smooth and round chin, silently in thought.

(These murals were created thousands of years ago, a long time before the "Blank 100 Years" 800 years ago.) ）

(In other words, that ancient weapon may have existed a long time ago, in Fish-Man Island!)

Robin's eyes lit up instantly, and the always cold and indifferent delicate face revealed joy from the heart.

For an archaeologist like her, who is passionate about archaeology, there is nothing more enjoyable than exploring the truth about the world through the real history.

After fierce battles with various forces, the content of the mural has changed again.

It was an empty and open space, and the prince wielded the seven-star sword in his hand and was engaged with an avatar who was almost identical to himself.

The only difference between the avatar and the prince is that his eyes, like the pupils of Azathoth, are a strange crimson color.

With great difficulty, the prince finally defeated the avatar, but then a second and a third appeared......

It was a tough battle of wheels, and the prince used all his strength, defeating six of his own avatars in a row, but he couldn't defeat the seventh anyway.

In the end, the seventh avatar pierced the prince's heart with the seven-star sword in his hand, and blood gushed out, and the raging black flames immediately wrapped the prince's whole body.

At this point, the content of the mural comes to an abrupt end.

"Haven't you continued to paint here?" Robin frowned.

According to Maya's description before, the next thing should be that the prince was manipulated by the Seven Star Sword, stabbed his biological father to death, and destroyed his own country.

And after regaining his senses, he chose to sacrifice himself and sealed the Seven Star Sword with his life.

The reason why the person who painted the mural did not paint the second half of the history may be because he did not want to record the prince's guilt so clearly.

(How exactly did the prince seal the seven-star sword in the end, is there really no record here?)

Robin looked again at the frescoes of the prince's battle with his seven incarnations, and her intuition told her that these metaphorical frescoes had hidden mysteries.

(By the way, there are also the seven sword tablets.) ）

Robin looked towards the center of the dungeon, but saw that a certain glasses had already come to the front of the seven sword tablets, and was quietly looking at them.

"Did you find anything? Sherlock. ”

Walking up to the sorcerer, Robin asked softly, immediately attracted by the inscription engraved on the sword tablet.

(Fear, anger, hatred, despair, arrogance, greed, jealousy...... Robin frowned slightly.

"Robin, who do you think the prince loses to among these seven negative emotions?"

Sherlock asked without looking back, pushing his glasses slightly.

Robin pondered for a while, shook his head, and said, "I don't know, I can't think of someone as powerful as him, what can defeat him." ”

Thousands of years ago, the world's No. 1 swordsman, with a seven-star sword with a destructive power comparable to that of ancient weapons, his strength was enough to sweep the great voyage.

In fact, he almost did......

In the cognition of a certain black-bellied woman, this last prince of the Askar Kingdom can already be called the [strongest combat unit in history].

"Yes, he's so powerful, so strong that he can defeat him, it's only his own heart left. As he spoke, Sherlock's mind moved.

-Mirror entity: Black Knight.

A large black knight's armor appeared out of thin air, and with heavy steps, it walked to the sword tablet with the word "Arrogance" engraved in ancient characters, and reached out to grasp the hilt of the sword.

"And the more powerful the existence, the more difficult it is to defeat the [arrogance] in your heart!"

Hmmm-

The black knight pulled it out hard, and the huge cross sword was actually pulled out by this brute force, and then he heard the sound of Caracalla's mechanism, and the entire dungeon began to tremble violently.

Under the gaze of the two of them, a hole opened in the ground between the remaining six sword tablets out of thin air.

A quaint black sarcophagus slowly rises from the ground.

"The coffin of the last prince!" X2

Sherlock and Robin looked at each other, then stepped forward together.