One Punch Marine! Chapter 1: Arriving In One Piece!, an One Piece + One Punch Man/ワンパンマン Crossover fanfic

This story is somewhat based off of One Punch Pirate! So I'm going to give some credit to the Author of it. I recommend reading and reviewing it.

Disclaimer; I don't own One Piece cuz if I did, then Luffy would be OP and a Marine. I don't own One punch Man cuz Saitama would be evil and even more OP.

To the story now!

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-Saitama, Three Years Old-

Saitama shivered in fear as he stared up at the man currently in front of him.

The man was very tall and had a Long Knife in his hands. The man was standing over the bodies of Saitama's mother, father, brother and sister, grinning wickedly like the mad man he was.

Saitama takes a step back, before his anger overcomes his thought process. He lunges at the man unexpectedly, taking him by surprise. This is enough for Saitama to punch him in the face, sending him reeling. He drops the knife, favoring to clutch his slightly bloody nose. This shows to be a mistake, as a second later the knife is in Saitama's hand, and is pointed at the murderer's neck.

The murderer's eyes widen in fear, but Saitama doesn't pay attention to this, the only thing going through his mind was thirst for revenge that even a young child could feel. His hand follows through, swiping across the man's neck. The man's neck is cut clean through-Not off, but enough to kill him. He hits the ground with a deafening thud, not even twitching.

With a shadow over his eyes, Saitama comes to term with the fact that he'd just killed a live, breathing human being. And he realized that he was okay with it.

"Hah, that was fun." He chuckles out loud, a slightly dark chuckle that no Three year old should be able to manage. "Making that person go bye bye was fun. I need to get stronger so I can do it again."

Saitama stumbles off from the crime scene, his facial expression shadowed.

-6 Years Later-

From that day, Saitama went through a harsh training regimen. That regimen was- 1000 push-ups. 1000 sit-ups, 1000 crunches, 1000 squats, 1000 chin-ups, 1000 reps with 100 pound weights, and a 100Km run, every. single. day.

After the first year, Saitama felt very powerful, like he could take on most people in the world. Even most people in the famed hero association. He felt almost unbeatable.

After the third year, he felt a bit dull. He couldn't find any people to have a good fight anymore. His life became dull and repetitive. Also, he started school late, at age six instead of five or four.

And then, comes the present year, the sixth year, he didn't try anymore. Somewhere along the way he'd learned how to use psychic power. Don't ask how he learned to use psychic power, even he doesn't know.

-Present Time-

Saitama is currently fighting the Kraken. He didn't know why it was walking on land, but it was attacking Z City so he had to kill it. He knew that he could easily end it in one punch or throw a rock at it, but decided to let his disciples handle it.

Even so young, Saitama has quite a few disciples due to his tremendous power. (Do not ask him how he became a master to disciples. He's confused about it too!) He has exactly 135 disciples. He made all of them train every single day, except a lot more leniently. He only made them do 50 of everything that he had done 1000 for, and they only had to run 5Km.

All of his disciples had a rank, based on their overall strength. Every month, they would fight each other to decide who got what rank. Saitama called upon his tenth highest ranked disciple to handle the Kraken.

"Handle the Kraken, Kuranchi." Saitama commands Kuranchi. Kuranchi nods his head in acknowledgement of the command and stalks over to the Kraken.

Oh yeah, and none of Saitama's disciples are over the age of Fifteen. Kuranchi himself is Fourteen. Kuranchi easily handled the Kraken, using Normal Punches. Saitama had called all of his disciples over to see this to encourage them to work harder. As soon as the Kraken was defeated, Saitama gave them a long speech of motivation.

Suddenly, a wave, a huge wave came up. Since Saitama was talking to his disciples, he didn't see the wave. And so, they were all engulfed by it and washed away to elsewhere.

-One Month Later-

Saitama sighs to himself as he lays down in his comfy bed. A lot had happened over the past month, the first being arriving the new and very stranger world that they were currently in.

As soon as his mind came back to him from the confusing trip, he'd searched for his disciples, only to find them laying down right next to him, some of them unconscious and some of then choking out water.

As expected, the ones that were unconscious got their training schedule upgraded. Anyways, after this and after waking everyone up not-so-kindly by shouting very loudly, Saitama had ordered one of them to go and scout for civilization.

The person he had sent, disciple number 100, had returned shortly later with a lot of news, one that they weren't in the same world, but in one with a world government, marines, and pirates to boot!

The first thought that Saitama had had was, 'Is this some kind of fair tale?' (No pun intended) Saitama, after this though simply shrugged and accepted it, his face just as emotionless and empty as always.

Just a week later, he had found a place to live, a large dojo in a forest, far away from the city near it. The Dojo was too big for his current amount of members, so he allowed them to advertise for more disciples to join. Although slow at first, people did slowly join. As in slowly, he meant two or less per day.

Saitama wanted more disciples. (Because then he could be more lazy and try less! (Other than his daily workout.)) He told this to hid current disciples, who suggested he advertise better by being famous. Agreeing with this logic, Saitama had looked into all of the occupations to becoming famous, and chose bounty hunter, for three reasons.

1; He could fight, so it would be easy.

2; It was a quick way to make money.

3; He could make his disciples do it, too.

It took them a few days to register all of them with the Bounty Hunter Part of the Marines, since it would seem suspicious if many people went in at once to get a bounty hunter license. Once they were all licensed, however, they had immediately went out to get bounties.

By the time the third week ended and the fourth week began, Saitama was a famous, rising bounty hunter and many people wanted join him. Thus, they had to interview them. On the bright side, Saitama was getting about 100 disciples per day. Saitama was satisfied once he hit 500 disciples, but he couldn't stop the flow, and currently has 1055 disciples.

'Alright, I've got to get up now.' Saitama thinks, getting up slowly. 'I have to get that bounty.' Just the previous day, Saitama had received a tip that the big shot pirate, the Yonko Shanks, had taken an island on the grand line and way currently living there.

Saitama stares at the wanted posters on the wall. "Rock star, 94 million berries. Yasopp, 250 million berries. Luck Roo, 200 million berries. Benn Beckman, 350 million berries. And Last but not lease, The Yonko, Shanks, 755 million berries." Saitama gives a small smile. 'I will be able to buy so many things at the supermarket.' Then he reminds himself that he didn't go to the supermarket anymore-his disciples did.

Saitama breaks down to the floor and weeps anime tears.

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Alright, did you guys like that? I poured my heart into it and took a few hours of sleep away from myself to complete it. This is only an idea fic- I don't know if I'll be able to continue it later on. But I'll try.

Again, this idea came partially from the author of One Punch Pirate! Check it out, it's a great fic!

With the things I needed to say said, I shall end this A/N here!

Brock the awesome dude is out! For now. (I WILL NOT DO TH- MWAHAHAHAHAHAHAHA!)