Fusion of Magic and Science

Regardless of the world or era, the main weapon of a submarine to attack when submerged is and has been the torpedo. Self-propelled projectiles that move underwater and are designed to detonate in proximity to or in contact with a target

Usually just one of these expensive single-use shells was enough to destroy the keel of a ship and sink it. A technology that, although it was very scarce and expensive in this world, Stephen was capable of building it and Fred was able to pay for it.

Even so, Fred decided to reinvent the concept of underwater weapons...

"Preparing Shark 1, Shark 2, Shark 3 and Shark 4"

When four cylinders made with the hard and expensive metal [HTX-109] were ejected from the submarine, Fred used the powers of his Life-Life No Mi to activate the green aura that days before he stored in those peculiar torpedoes, which changed shape until they became great white sharks of twelve meters

But they weren't just any giant white sharks!

They were white sharks that acquired the characteristics of their metallic medium. Their bodies were entirely metallic, covered in exfoliating scales, incredibly sharp fins, and their teeth had become drills that could rotate at will, just like the strange large drill that replaced part of their nose.

"Guys, go destroy the boats, just like we've practiced" Fred said, communicating with the sharks through the aquatic Den Den Mushi that hung from their metallic earring's "Don't expose yourselves stupidly"

Among many of the tasks that occupied Fred in the last two months, training minimally intelligent animals was one of his main challenges and the most time-consuming.

The first step wasn't easy, especially for a boy who didn't know how to swim. He had to travel many kilometers of ocean until he found a powerful shark with an intelligence similar to that of Megalo, Shirahoshi's pet shark, with whom he could reason and wasn't totally dominated by his wild instincts

After locating the specimen, the next step was easier. He only needed to acquire his lineage factor with a simple cut to be able to clone him whenever he wanted, but the hard work would come next.

After [capturing him] the next obvious step was to convert him to their side. That wasn't something extremely complicated to Fred with his ability to communicate with animals, his ability to bribe them with unlimited amounts of food, his terrifying sadistic methods of violent persuasion, his higher power on earth to prove who was boss and his Pact Magic to ensure that he would be loyal to him forever.

The last step was to give him a metallic body and train him as if he were a Pokémon to make him destroy ships and other targets following Fred's orders when he decided to call him and several of his clones to fight.

The rest was history

CHAFFF!!!!! CHAFFF!!!!! 

As they had trained multiple times, to minimize the risk of being attacked by cannons or super humans on board the ships, the sharks ascended directly below the target to destroy it, sinking it from a position from which it was impossible to counterattack or prevent their shipwreck 

And once an enemy ship was eliminated they returned once again to the seabed to repeat the play with the next target

With boats made of wood, a simple cut in the keel made with the enormous and sharp dorsal fin was enough to make a large hole through which the water entered and sank the boat in a matter of seconds. However, in the event that the Metal Sharks wanted to speed up the process or the bottom of the boat was reinforced by steel or another more resistant material, they could always use their powerful teeth and drilling nose to completely destroy it.

CHAFFF!!!!! CHAFFF!!!!! 

There was no way to resist that method of attack! The ships fell one after another without even knowing which would be the next to sink!

Faced with this terrifying event, the pirates saw no other solution except to jump into the sea to swim towards the enemy shores even if their ship hadn't sunk yet

"MUA HAHAHAHAHAHA!!!

AND THIS IS JUST THE BEGINNING!

The day I get the bloodline factor of a North Blue Kraken I'l create a Mecha-Kraken and…" Shouted Fred, who inflated like a puffer fish with excessive euphoria... before gradually deflating to nothing. "Well, maybe that's not such a good idea...

There is no room to support its giant structure on the submarine and transform and des-transform it over and over again would be a pain in the ass...

But a man can dream..."

Without a doubt, Fred would love to expand his catalog of super semi-biological weapons inside his submarine to destroy entire fleets in seconds, but that wasn't such an easy task. Not counting the time and effort required to train an aquatic predator to perfection and the great financial cost of constructing his deadly metallic medium with its same mass, there was also a problem with its storage, preparation and use in battle.

With his Mecha-Kraken plan, being underwater Fred would need to move from his command chair, go to the torpedo room that had a hatch to the sea, des-transform inside de sea the little item that contains the giant metallic medium that also contains de the Kraken linage factor, tie the 4,000 tons of medium to a crane so that it doesn't sink into the water yet, attach the Den Den Mushi earring in the medium and give him life in and disconnect it from the crane in time record before the submarine sank to a dangerous depth due to the overweight

And then to get it back he would have to do the reverse process, which was more complicated than release it... not to mention that Fred couldn't handle 4000 tons of weight now and probably never would.

Too inconvenient and cumbersome compared to having mediums full of green aura ready to be transformed in the torpedo room in advance. For this reason, in the compartment/pool of the metallic sharks there were only 12 mediums of two and a half tons each with the ability to transform into sharks.

For now the most optimal option in terms of cost benefit to destroy enemy ships

"Boss, with my ghosts I'm seeing more than 1000 pirates swimming towards the island

Shall I guide you to attack them?" Perona asked, still sitting on top of Fred, eager to be able to drive the submarine "Shall I chase them?

Please..."

"There are 1,387 and there is no need…" Fred responded with his eyes closed, using practically all his concentration on his headphones and on disappointing Perona. "Just tell me which ones have rewards."

The main means of orientation of a submarine that operated hundreds of meters under the sea where the periscope was useless and the light of the sun, moon or stars couldn't reach was none other than...

The sonar!

The old acoustic location system that emits waves and then analyzes how they bounce back to detect and determine the distance of any obstacle that Fred's prodigious ears, developed after his failed sessions to obtain Observation Haki, could lead to a higher level.

As if he were a bat, Fred was able to visualize any object in quite detail in his mind, no matter how small, as long as it was completely immersed under the sea and within the range of the sonar waves.

He was even able to distinguish scalefish from prawns from miles away without using his eyes! 

Fred only had difficulty perfectly identifying objects that weren't completely submerged underwater, such as boats or swimmers. Although he knew where they were, he wasn't able to distinguish their complete structure and therefore identify them perfectly.

However, that small weak point was easily compensated thanks to Perona and her ghosts who had become the perfect periscope.

Perona could send them several kilometers away, control them and see through them even if she was a few meters under the sea, so they always knew what was happening on the surface of the water in great detail.

"Is it necessary to go to so much trouble to recover their bodies?" Stephen asked. Not being able to shoot or see what was happening on the surface was beginning to get bored. "You can create their heads with your ability to prove that you have killed them."

"I know but...

I don't like cheating if I can help it and killing them in front of their gang will cause quite an impact, it will increase my legend and give us a lot of publicity" Fred said with a face that was becoming more evil by the second "I don't leave survivors for pleasure like already know

MUA HAHAHAHA!!!"

Attached to his command chair was a pipe whose sole function was to absorb sea water and then return it to the ocean in an endless cycle. An extremely stupid and unnecessary structure that only took up space without fulfilling any kind of useful function on any submarine.

Or so it would be if it weren't for Fred's Life Life No Mi!

"Water is the origin of life... and death"

Fred could extremely easily apply the power of his Akuma No Mi to the water that ran through that pipe. In this way, the water that reached the position of his hand touching the pipe changed considerably upon returning to the sea.

That water was transformed into sharks!!!

Hundreds of sharks that unlike the Metal-Sharks were 100% biological, half as small, wilder, less intelligent and not trained at all due to being created solely through water without adding the lineage factor of the original shark to the mix

However, it didn't take much training to fulfill the mission with which Fred brought them to life, was something that was practically in their nature.

Eat swimming pirates!!

"Guys, you guide your new lackeys

Today they have an all-you-can-eat buffet" Fred said to his four Mecha-Sharks through their Den Den Mushis.

"Shark!" His aquatic killing machines answered

However, in the event that at some point those normal sharks stopped being affected by Fred's will and decided to do things other than kill swimming pirates, the trained alpha Metal-Sharks that Fred released into the sea could coordinate the other beta sharks without much problem so that they carried out his orders.

And with this another devastating and inhuman massacre began on the surface!

The sea water quickly began to turn red due to the plague of sharks that Fred unleashed. The pirates died by the dozens every second no matter how hard they tried to swim or fight

And while hell was breaking loose on the surface, the opposite was happening under the sea...

"Wow... this is being so easy that scares me...

I can think of very few scenarios in which we wouldn't emerge victorious from a nabal battle with this power…" Said Fred, very comfortable in his armchair while he drank one of his rejuvenating shakes and enjoyed the relaxing melody composed of the pirate's screams of agony. "I'm afraid I'll become complacent..."

"Me too...

I really wonder if cannons were necessary with your ability…" Stephen said, visibly more bored and depressed than before while pedaling on his bicycle/generator seat. "I'll work less motivated on the [Railgun] project because of you."

"They are always necessary in the event that I'm not available, especially with such a good marksman with you on board" Answered Fred, motivating his staff despite knowing that Stephen was putting on this show to be praised by him for free "Your range and aim cannot be matched by any shark created and trained by me...

For now..."

"Exaggerated…" Said Stephen, satisfied and somewhat blushing after hearing what he wanted to hear. "I forgive you, but only because I contributed to the creation of the Mecha-Sharks and the infinite shark generation system."

"This... sorry to interrupt, but the pirates are almost all dead now.

Do you want me to drive to the surface?" Said Perona, extremely anxious after a long wait that seemed to be coming to an end. "Come on, you can't say no now!"

"No!"

But contrary to her expectations, Fred took her out of the command chair and left her on the floor as if she were a puppy.

"Huh?"

Leaving Persona completely dumbfounded, like a wild rabbit surprised by the light of a car's headlights in the middle of the night.

"I'll use one of my personal vehicles

I want to test it" Fred said as he whistled happily on the way to the exit door "I'll be back right away"

And just when Fred left the control room, Perona was finally able to react.

"You're a bastard!

You do it on purpose, right?" Perona shouted very angrily, who ran after Fred to punch him in the leg, the highest place she could hit without jumping. "Why're you against me driving?"

And that question raised a reasonable answer that Fred had no qualms about sharing "You're a minor and don't have a license to drive submarines."

"YOU TOO!!!" Protested Perona with more than justified reasons before climbing over Fred's head to hit him insistently "LET ME DRIVE! LET ME DRIVE!!!"

"STEEL-STEEL-STEEL!!" Laughed Stephen, who stayed in the command room "I never get tired of these two…"

One of the many small details that fascinated Fred in his previous life when watching One Piece was how some Akuma No Mi users used their powers to interact with vehicles to travel comfortably.

Smoker's motorcycle, Ace's boat, Caesar Clown's hot air balloon, Big Mom's living ship. More than remarkable and useful examples of the fusion between technology and Akuma powers... and Fred didn't want to be less than them.

Although Fred's submarine had many special functions thanks to the intervention of his Akuma No Mi, it was impossible for Fred to turn it into a hybrid being between a submarine and a sea monster like the Mecha-Sharks. After all the armored submarine weighed more than 100,000 tons.

However, even if he couldn't turn his main vehicle into a science-fiction monster, Fred was neither discouraged nor threw the towel. If he couldn't fulfill one of his dreams with the main vehicle, he would achieve it with a secondary one!

With the collaboration of Stephen and Marlon, several cabins were created for any kind of trip with the exact mass of some giant animals. Cabins that Fred always carried on him turned into tiny teeth and he could reverse them whenever he wanted.

Among these many cabins, Fred had one with the exact mass of a 25-meter dolphin, which upon completing the transformation became a small living submarine in which to travel inside. A mammal-based submarine that was capable of providing completely breathable air to its crew and always followed Fred's orders, especially when he was inside transmitting orders directly by being in direct contact with Delfi

And right now he was traveling towards the surface inside with the angry Perona-ghost stepping on his heels

"Not so fast! I can't follow you and without me you won't know where the survivors are!" Perona shouted, floating underwater next to Fred's submarine

"Yes I can, but...

How can I hear you speak so well if you're in the water?" Fred asked, surprised by the unexpected capabilities of Perona's Akuma No Mi. "And seawater doesn't affect you at all in you spiritual form?

"I'm half a ghost, and how should I know?

You're the scientist" Answered Perona, who was finally able to enter the cabin. She was afraid of floating on the seabed, even if she was intangible.

---

On the sea surface full of blood, ship remains and human beings there was a small island free of death

A desert island formed by a piece of ship, surrounded and guarded by four metallic sharks, who lick their lips seeing the only eleven survivors of the shipwreck while they progressively lose hope of living

"Why? Why don't they eat us? Do metallic ones only feed on ships or something like that?"

"I hope so...

Better than those made of flesh and blood."

"God...

My body still shakes remembering how close I came to dying."

"We may be soon...

Whoever owns the submarine and these monsters is after the price of our heads."

"I think I have a suspicion of who might be... in fact, only one person comes to mind."

"And me... I think it would be better to commit suicide now that we have the chance...

We'll suffer less if it is him"

"WOOOOOW!!! I have no proof but I have no doubts either! The capabilities of these sharks aren't causal!

They must have been created or modified by someone to make them the perfect nabal weapons they're now!

I WANT THEM! I WANT THEM FOR MY NEW CREATION!!"

"Captain! I'm sorry to be the bearer of bad news, but I doubt you'll be able to create a new ship in the future...

We will surely die!"

"Does anyone wonder how and why the normal sharks disappeared when they got close to us and now they have all disappeared by magic?

I would like to know before I die."

"I think they turned into sea water. One jumped over me before disappearing and I saw it clearly... although I still don't believe or understand it."

The eleven pirates waited patiently... although some were thinking about suicide despite having survived a real carnage… for the giant submarine that destroyed their fleet to appear before them once again to dictate their future

But instead of a… normal… submarine what appeared in front of them was...

"Wow, a metallic dolphin with a cabin in which there seem to be people" One of the pirates said in a way too apathetic to what was happening in front of him.

An apathy that seemed to have spread among the survivors "I know I should be surprised, but after what I have experienced today…"

The apathy infected everyone, except...

"INCREDIBLE!!!" Captain Jenny shouted, still burning with passion as she witnessed incredible ships and weapons one after another "THIS IS THE BEST DAY EVER!!"

And when the metal dolphin hatch opened and they finally saw the demon that had completely exterminated their fleet and reduced their crew from 3,000 men to just 11...

"Hello Frederick Fred, great pirate slaughterer who commands beasts...

Excuse us for not scream in amazement, we imagined it would be you."

The pirates persisted with the same apathy as before, as if they were the birthday boys of a surprise party that they already knew would take place and who would be the hateful people who would attend 

An apathy, lack of surprise and fear that surprised and disappointed Fred in equal measure... but he didn't let that spoil his good mood, at least this was better that than being called dozens of absurd nicknames.

"Hello boys and girls!

What do you think of my submarine and my fleet-destroying friends?" Fred said as if he were talking to little children as he petted one of his metallic sharks. "Adorable, right?"

And he quickly got a response, although it wasn't the expected response either.

"BOTH ARE INCREDIBLE! THE BEST THINGS I'VE EVER SEEN IN MY LIFE! WHOEVER DESIGNED THEM IS A GENIUS AMONG GENIUS!

Please! Show me the design of this wonder! I need to know all their secrets!" Jenny shouted, begging on her knees, "I promise to do anything, please, I beg you!"

"Noooo... but I promise to collect your heads without torturing you if you don't waste my time anymore, I'm in a hurry" Fred said trying to ignore the crazy woman to have a civilized conversation with those who had given up their lives with serenity "So if you don't mind... let me have a good look at your necks..."

"It's a good offer..." The ten pirates sighed hopelessly as they looked up at the sky "Quickly, please"

At the moment they facilitated the process, Fred unsheathed his sword and without getting off his means of living transportation and…

SLASH! SLASH! SLASH! SLASH! SLASH! SLASH! SLASH! SLASH!

He performed eight energy cuts, cutting seven of those glowing necks plus Jenny's, who was still prostrate on the ground as before being sliced.

"Hehe...

I barely need to concentrate or prepare to perform multiple energy cuts anymore." Fred said proudly as he resheathed his sword wotj style. "I've improved a lot, right Perona?

But Perona refuses to give his opinion on something she didn't understand or cared

"Have you not shown mercy even to a woman?" Perona said, shocked to see how uncliché her boss is. "You're so ungentlemanly...."

"I'm a defender of true gender equality, I don't discriminate when it comes to killing" Fred responded as he looked around and then at the three unrewarded pirates whom he hadn't decapitated "But you three will live for now, I'm I'm sure that ship from the Kingdom of Ilisia will be interested in you.

Come, quickly, give me the heads and give this to the captain of the ship who will capture you..."

"Yes... sir..." The three survivors answered while one kept the object that had been given to him in his pants wet with water, blood and urine while the others picked up the decapitated heads.

And while the three pirates threw the heads at Fred as if they were balls to save Fred from the trouble of leaving the comfortable dolphin to pick them up, Stephen talked from Den Den Mushi in the cabin, sine he was listening at all this time. "Shouldn't you wait for that ship?

You have saved an entire country or at least part of the country, you will surely be rewarded."

"Possibly, but our agenda is too committed and if we accept their reward they will make us stay here for days with their stupid ceremonies" Fred replied while washing the heads a little with the sea water to avoid staining the leather seat "I have given him a Den Den Mushi to one of the pirates

They will have the opportunity to thank us in minutes and probably decorate us, give us a good reward and celebrate a party in our name on another occasion."

"Ho... I wanted to go" Perona sighed, totally dissatisfied with how the day had unfolded for her "I can't drive a submarine, I can't have parties in palaces... 

I can't do anything."

"You can train, study and work as I did at your age" Answered Fred sarcastically "That will help you achieve all that in five years without my help"

"...

…" Perona didn't even feel like answering him, but she did it anyway "And you can suck my feet right now"

"Maybe other day, let's go guys!" Fred shouted, ordering the withdrawal of his four war sharks to follow him back to the main submarine. "And you, explain everything that has happened to your captors, without sparing any details!"

"Shark!" "Shark!" "Shark!" "Shark!"

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You'll be able to see 8 chapters in advance in my Pa-treon

pa-treon.com/user?u=83938371