Animeverse Slayer!

Leo was called into Sengoku's office. He was officially promoted to the rank of a vice admiral. No one objected to this, Leo had shown he was capable by destroying a small fleet of Big Mom pirates and captured two of their Sweet Commanders.

However this capture wasn't without consequences. When Big Mom got the information about their capture she went nuts and destroyed half of Whole Cake Island.

A Yonko mustn't be provoked!

Big Mom ordered her men to kill every marine they come across. The few sparse Navy bases in New World were destroyed.

Luckily Sengoku was wise enough to order an evacuation when he got the report about their capture.

Capturing Cracker and Smoothie had it's pros and cons. The pros were simple, Navy's prestige was heightened. As for cons, they were now barred from entering the New World.

...

New World.

In an unknown island. This was the one of the bases of Beast Pirates.

This was the captain of Beast Pirates, A Yonko, Hundred Beast Kaido!

"Kaido-sama, Nest was killed."

A pirate trembled and reported.

Kaido paused for a moment and continued to drink. After finishing the bottle he threw it to the ground. The bottle broke to pieces.

The pirate was shaking from fear.

Kaido turned his head and asked, "A marine killed Nest and took the devil-devil Fruit? And you couldn't do shit?"

He asked casually but those who were listening felt a chill down their spine.

"Kaido-sama, we-we...

The pirate started to explain but he was finding it hard to say anything.

Kaido flung his hand and struck him. The pirate felt as if an iron pillar smashed into his body. He was thrown away while coughing blood.

He fell down far away and didn't get up.

Gulp.

The rest of the pirates didn't dare make a sound.

"No one takes my stuff!"

Kaido bellowed.

...

Marineford.

Leo and Mace were having a spar inside the kairoseki training room. Ever since Mace ate the devil-devil fruit his physical attributes kept improving constantly.

Boom!

Mace was blown away by a sudden kick from Leo. He crashed into the wall causing it to shake.

"That's enough for today. Your sudden improvement is due the effects of the special paramecia, it should have peaked and you will receive no more upgrade from now on."

Mace got up from the ground and rubbed his head and shoulders. That last one packed quite the punch.

"Yes, sir."

Leo nodded and walked to the door while saying, "Train the basics all over again. A good foundation is the key to improvement."

Mace listened intently. He suddenly remembered something and said.

"Sir, we found an island according to your requirements."

Oh?

Leo was surprised, "That was fast."

Mace explained, "Marines do have a wide network, so it isn't that hard to find one."

Leo accepted that explanation. After he was promoted to vice admiral he decided to take it easy and asked Mace to find a small uninhibited island.

He wanted a place without any disturbance. That place would be his training ground as well his workshop.

Mace continued, "Sir, that island however is home to vicious beasts. It's not easy to live there unless you remove all of them."

Leo shook his head, "No. Just leave it as is. Gather resources and manpower needed and start construction as per the plan."

Mace said no more and excused himself.

Leo was on his way back when he came across a tall man. He wore white suit with a blue inner shirt. He was slightly tan and had an eye mask on his forehead.

Man, he is tall.

Leo stared at this man and moved slightly as to not bump into him.

"Arara, you are Leo, right?"

This man suddenly stopped and spoke to Leo.

Leo nodded and asked puzzled, "How do you know me."

The tall man said, "You threw two Sweet Commanders in Impel Down, which Marine doesn't know you?"

Ah, right.

Leo suddenly realised who this guy was. He was one of the three powerhouses of Navy, an Admiral.

Codename, Aokiji.

"You free? I have some great tea."

Aokiji asked.

Leo thought for a moment and nodded. He was free anyway so might as well enjoy high grade stuff.

It's nice to be an admiral. Should I become one?

While Leo was having a ridiculous thought Aokiji made some tea and offered Leo a cup.

Taking a whiff Leo could tell it was a high grade one. He took a sip and tasted a bitter but sweet flavour.

"Nice."

Aokiji nodded and calmly drank his tea. They didn't speak and enjoyed their cup.

After finishing his cup Leo stood and said, "I will be going. Thanks for the tea."

Aokiji followed his figure, his eyes were deep as he was thinking of something.

...

One month later.

Leo stepped on an island. Mace led him in further through a cleared path. Soon they reached an open place.

A small house and a slighter larger building to it's right was before them. The building to the right had a chimney. To it's left was a glass house filled with different kinds of plants and a small laboratory.

There was a small fence surrounding the three structures.

"Very good. Where is Shinobu?"

Mace replied, "Ma'am got news about some rare plants and left with the crew to procure them."

Leo nodded. Just as he was about to enter the house his den-den mushi rang.

Kachak!

He answered it and from it came a cold murderous voice.

"You are that marine who caught my daughter and my son?"

Leo frowned and asked.

"Big Mom?"