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One punch man:Traveling between worlds

This story is about a simple otaku who has above-normal physical powers and psychic powers who doesn't use these abilities for anything, except for basic things. This is our protagonist who lives in a time of peace. Being the son of two heroes, he doesn't have much to do other than read manga or watch anime since his parents are already stronger themselves, not letting their son have the opportunity to be a hero. But what would happen if this boy traveled to the worlds he reads about and sees every day? And that's what we're going to find out.

GrandMasterBRX · Anime & Comics
Not enough ratings
73 Chs

I just arrived and I'm already creating chaos?!

Among everything that is happening in my life, I didn't expect to be in one of the greatest animes in history, One Piece! And I'm in the saga that starts the timeskip!

💭Wow, my parents must be worried. But now I have something else to deal with, which is where I am.

I look around me and see practically a war between pirates and sailors, one in each corner. I can see Whitebeard on his ship and the protagonist of One Piece, The Straw Hat: Monkey D Luffy.

💭Wow, Luffy is smaller than I thought. The worst thing is that my mother is the same size as him. Maybe it should grow a little after 2 years.

At that moment I see Luffy running and with one of the Admirals called Kizaru who is ready to shoot a light shot at the Straw Hat.

-Luffy! - I shout his name and out of habit I tried to use my telikinesis, but I quickly noticed that it didn't work. - Shit! It looks like it goes the traditional way! - I say this irritated by my condition.

Just as Kizaru's beam of light was about to hit the straw hat, I was faster and got Luffy out of the way before the worst happened. The explosion that Kizaru made just demonstrated how strong he is.

💭 Eventually, I might end up fighting him and I can't wait for that! Damn, I can't hold back my excitement! I look like Izuku now I'm so excited! Besides the fact that I don't need to be afraid to let go. The only problem is the fact that all admirals (with the exception of Garp) are logia, meaning my fists will be useless.

- I-I am alive? What? Who are you? You saved me. - Luffy said, surprised to see that he's okay.

💭Wow, what do I say to Luffy? It's happening so fast that I didn't even think what to do or say! Luckily it's not that complicated to make conversation with.

- Hey! I'm Saito! I'm a new pirate. - I introduce myself by copying Goku and I soon regret having said that.

💭Wow, I could have done something better.

At that moment Ivankov appears and he asks if Luffy is okay, he said he is thanks to me. Ivankov looks at me suspiciously, but Kuma interrupts the 3 of us when he starts to attack Ivan.

Ivan said that he will deal with Kuma and that I am supposed to protect Luffy. On the way to the main wall, Luffy and I had to deal with a lot of sailors and on the way, Moira sends undead to attack us, but I deal with them easily.

- Incredible! You just threw a punch and they went flying. - Luffy said with his eyes shining.

- Thanks for the compliment. Now let's continue. We have to save Ace. - I say this by starting to run along with Luffy.

- How do you know Ace? - Luffy asks. - Reputation. I know you by each other's fame. - I answer.

💭Well I'm not lying about that. I know you from the anime.

Sengoku, who is the leader of the Admirals, sent reinforcements to deal with me and the Straw Hat, until a giant got in the way. During this Semgoku revealed that Luffy's father is Dragon, but he also has Ace who begged his brother not to save him. Luffy being Luffy didn't care about Ace's crying and continued to move forward.

- Get out of the way, big guy! - I say that, taking a jump, I punched the giant that flew and hit the main wall near Kizaru. Everyone was shocked when they saw what happened.

- Who is this guy who defeated a giant with one punch?! - Said a sailor.

- Since when is a newbie this strong? - asked a pirate.

- He probably only came here to gain fame and grow as a pirate. I admit this kid has balls. - Said a Whitebeard pirate.

Luffy and I move forward and Ivan and Jimbei get together, but before we can say anything a large group of sailors are running towards us.

- Saito! Ivan-chan! Jimbei! Help me pave the way to get to Ace! - Luffy said, getting ready.

- Right! - I said, Ivan and Jimbei at the same time.

We joined our attacks and the army of sailors were easily defeated. With that done, Luffy and I continue running, but Moira decides to get in our way.

- Kishishi... Straw Hat, I won't allow you to advance. - Moira said with a group of sailors around her.

- Then I'll get in your way, Moira! - I say this standing in front of him. - Jimbei! Can you keep Luffy? - I say this looking at him.

- Don't underestimate me boy. - Jimbei said and I just let out a smile.

- And who are you? I've never seen a pirate wearing a ridiculous costume. Besides, you don't seem strong to me, I'm going to rip off your shadow and I'm going to- Moira fell silent at the same moment he received a punch in the middle of the stomach.

- You talk too much, Moira. - I respond and Moira falls to the unlit floor.

- H-He defeated Moira with one punch?! - Said the Sailors who were with Moira.

- Will you girls want to face me too? - I say this with a smile making the sailors run.

💭Okay now where is Luffy?

I look for where Luffy ended up and I find him on the ground, but with Hancock and Jimbei protecting Smoker's straw hat.

💭My god, the anime doesn't do justice to Hancock's appearance.

She really deserves the title of the most beautiful woman in the seas, I'm honestly a little jealous of Luffy for being able to steal her heart, but I know that his love is food, so I don't know if the queen of the Amazons will be able to stay with him.

Hancock gave the key to Ace's handcuffs to Luffy and he immediately hugged her.

💭My god, she is totally in Luffy's hands. Wow....

Hancock literally melted in Luffy's hands and when he let go of her, Hancock fell to the ground exhausted. I just see this scene impressed and speechless.

- Come on Saito! We have to rescue Ace! - Luffy calls me and I'm surprised at how quickly he trusts me, but I remember who he is.

- I'm going! - I respond with a happy smile on my face.

Unfortunately, my joy ends up disappearing quickly when I see a certain swordsman, but my blood starts to boil when I discover who it is.

- The guy who defeated Zoro! - Luffy said, scared to see him.

💭Mihawk if I'm not mistaken. He is also Shanks' rival, who apparently is the only person who can face him on equal terms. Wow I hope my memory of One Piece is fresh.

Luffy even tried to walk around Mihawk so he wouldn't see him taking advantage of the number of people fighting, but Mihawk doesn't have "hawk eyes" for nothing.

💭Tch! I have to get a sword!

I pick up a random sword on the ground and in the blink of an eye, I interrupt Mihawk's attack that was supposed to hit Luffy.

- Saito! Thanks again for saving me. - Said Luffy.

- Don't thank me yet Luffy! Don't stop moving forward! Let me take care of Hawk Eyes. - I say this holding Mihawk with a common sword.

Luffy hears what I said and starts running to the wall while I'm dealing with the strongest Swordsman in the seas.

- Hmpf. - Said Mihawk, wasting no time in counterattacking.

💭He's fast.

I defend all of Mihawk's quick attacks, honestly even though I've never used a sword, I can tell he's testing me. To a normal person's view it looks like Mihawk is only making one attack, but to me he's making non-stop jabs, it's like me using "multiple punches" but using a sword.

💭For a guy who uses a big sword, he doesn't care about the weight.

Sparks keep flying every time our attacks clash, neither of us are worried about what's happening around us.

I'm impressed with myself at the fact that I'm managing to keep up with Mihawk even without experience using a sword.

💭Is it something similar that happened in my first fight against Rumi?

I learned Sanji's style when I fought Rumi and now it seems like I'm in a similar situation.

And as if every time my sword collides with Mihawk's, I evolve more and more.

Unfortunately Mihawk ends up increasing his strength and this caused the sword I picked up to be broken in half.

💭Damn!

Mihawk takes this opportunity and releases a slash of green light in my direction and I am hit at close range and a small explosion is caused.

- Tch! Crap! You screwed up my uniform. - I complain, seeing the state of my clothes.

The smoke clears and Mihawk is surprised to see me intact and alive. What suffered damage was my uniform and my mask, which have a large vertical cut.

- Well, I'm going to have to fight without a mask and without a shirt. - I say that and I rip off the torso of my uniform and my mask, leaving only my pants and boots in one piece.

- Boy. What is your name? - Mihawk finally says something.

- Look at the powerful Hawk Eyes, do you want to know my name? - I say this with a smile.

- It would be disrespectful if I didn't ask a worthy opponent. - Mihawk said, which honestly made me happy inside.

- Worthy? I'm just an amateur swordsman pirate. - I answer that by disguising my excitement.

- Don't be modest, boy. I wouldn't call anyone a worthy opponent. You are one of the few people who managed to exchange attacks with me without any problems and also resisted one of my techniques without receiving a single damage. It would be crazy of me not to ask your name. You may be an amateur, but I can feel a great power in you. - Mihawk states that he honestly left me speechless.

Hearing this come out of Mihawk's words left me with nothing to say. I know I'm stronger than him, but receiving a compliment like that from one of the strongest guys in One Piece is no small feat. And as a One Piece fan, made me happy.

💭Damn, not even Zoro received a compliment like that from him! Now I can't stop, I have to respect what he said.

I pick up a Katana that is lying on the ground and get into a samurai position and have a serious expression.

- My name is Saito. Saito Tatsumaki. I may be a new pirate, but I won't back down even though you're the strongest Swordsman! - I declare this not noticing that the admirals are watching us.

- Excellent. So come, Saito Tatsumaki! Show me your potential and try to surpass me! - Said Mihawk, who starts running towards me.

- Here I come Dracule Mihawk! - I respond out of respect for him and move towards him.

The sounds of our swords clashing are heard by everyone in Marineford.

Sengoku analyzes the fight and Kizaru and Akoiji are worried about the outcome of this duel and Akainu watches me putting me on the list of people to deal with.

Whitebeard who is watching my fight very carefully.

- It seems that this unknown kid also has potential like Ace's brother. Hmpf this generation is getting more and more interesting. Marco! Keep an eye on the green-haired boy and see what he's capable of! - Whitebeard orders his commander.

- Yes father! - Marco responds by returning to the fight.

- Let's see what you're going to do, green kid. - Whitebeard said with a slight smile.

To be continued.....