Animeverse Slayer!

After a day of sleep Leo woke up groggily. He found it a bit hard to breathe and his body ached all over, but it was bearable.

"You are awake."

He heard Shinobu's voice and turned his head to see her walk in with a bowl of clear amber coloured medicine.

"I fell like a wreck."

Shinobu sat down near the bed and gave him the medicine.

"If it was anyone else they would be in bed for weeks, or even dead. So don't complain."

Leo chuckled lightly and drank the bowl of amber coloured water. It felt a bit bitter.

He could feel it flow down his throat. When it reached his stomach a wave of warmth spread out and soaked his entire body. He felt really comfortable.

"Your 'Breath' is getting stronger."

Shinobu raised her head proudly. Leo laughed and pinched her nose.

By soaking the drugs with her 'Breath' Shinobu is able to increase it's potency by several fold.

Leo leaned on the bed and said, "I was naive, Shinobu."

She heard him and didn't speak.

"That many people died because of me."

Shinobu shook her head, "It's not your fault. That woman was crazy."

"Maybe."

Leo closed his eyes for a second before opening them, "Pirates... they fear nothing. That's why they kill and loot. It's time to put fear into them."

Hearing his words Shinobu smiled.

Leo looked at her and asked with a smile, "Do you think I have changed?"

Shinobu shook her head, "No, you didn't. It's where we stand that's changed. In our world, there are no devil fruits, no haki, no giants, no mermaids. Our world did have some peculiar species and people with abilities, but it was normal and not as exaggerated as this one."

"Here there are those who could destroy a mountain with a single punch. There are sea kings that can swallow even the largest ship from our world in a single bite."

"Rules made by normal people are only able to keep other normal people in check."

"It's different here. In this world everything depends upon who has the bigger fist. Your mind is still hardwired to our world, following the rules set by normal people. Against those monsters in this world, those rules mean nothing."

"If you want them to follow the rules, you must have enough strength to deter them."

Leo was stunned when he heard her, then he suddenly laughed.

"Haha, I never imagined you to understand this so easily."

"Hey, I am a doctor, I can save a life or take it, I have seen more of life than you, it's in my profession. So it's easier for me to understand this."

Leo shook his head and smiled. At this moment he felt relaxed, the weight on his mind was gone.

"So what are you gonna do next."

She suddenly asked.

Leo said, "Train. If my technique was complete I could have chopped that old hag into two pieces."

"But that technique uses up all of your strength."

"That's because it's not complete. Most of my strength leaks out when I use it, if it's complete I can use it three to four times. When I get stronger the number of times I can use it will also increase."

Shinobu nodded, she got up and said, "Rest for now. You should be able to completely recover in a couple of days."

Leo nodded.

With a clear plan in mind he closed his eyes and laid down comfortably.

While Leo was unconscious the world was in shock.

Big Mom attacked Impel Down!

Two Sweet Commanders were killed!

Marine Hero, Garp, The Fist made a move!

Big Mom was injured and Big Mom pirates retreated!

Every piece of news stunned the world. Especially the part were Big Mom was injured.

Sengoku didn't miss out on a single detail and let the whole world know of the battle. To raise the prestige of marines he especially emphasized Leo who injured Big Mom.

A vice admiral injured Big Mom, a Yonko!

Pirates all over world trembled when they heard the news. The navy was already a domineering presence that bore down on them. Only the Yonko dared to fight them.

A now an additional person appeared among them who can injure a Yonko. He was young and hadn't reached his peak yet.

Thinking upto this many people were shocked and scared.

Marineford.

Sengoku was in a good mood. So much so that he didn't even mind Garp making a mess out of his office while eating rice crackers.

"Momousagi, Tokikake and now that brat Leo. You have three Admiral candidates, aren't you lucky."

Garp chided while eating.

Sengoku ignored him and drank his tea.

Garp suddenly stood up. Sengoku raised an eyebrow and asked, "Where are you going?"

"To see that brat."

Sengoku didn't mind and continued to drink his tea. But as Garp was about to exit he said.

"Your grandson is causing problems."

Garp paused for a second and laughed, "Bwahaha, he is just like me when I was younger!"

Though he was laughing it was full of powerlessness.

...

Leo was out on the practice field.

His blackish red sword was humming as innumerable amount of sword rays converged on it's edge. A powerful, much stronger sword ray was being condensed.

With each passing second the sword ray got clearer and more refined. But it hit a limit after some time.

Leo focused and used even more spiritual energy. The sword turned darker and the wave of red on it's edge gleamed. The condensed sword ray fluctuated for a second and dispersed.

Still some ways to go.

Leo thought to himself. He made progress and was nearing completion of this technique. It just required some time.

Putting his sword back into it's scabbard Leo was about to walk back to his house.

Hm?

His spiritual sense picked up an incredible presence coming in his direction.

Garp?

He already saw who it was and was surprised.

"Vice admiral Garp, what brings- holy shit!"

Just as he was about to ask why he was here Garp rushed out from the jungle and punched. Leo's heart nearly leapt out of his c.h.e.s.t.

"Iron Fist!"

A simple fist clad in busoshoku haki clashed in his direction.

Leo hastily drew out his sword. Though it was a simple fist without any overly complex techniques Leo felt suffocating pressure bearing down on him.

"Merciful Rain!"

Innumerable sword rays condensed on his sword and formed a much larger one as he swung his sword down.