If you are looking for some of the best and most popular One-Punch Man fanfiction, you have come to the right place!
One-Punch Man is a Japanese manga series that follows Saitama, a superhero who grows tired of defeating enemies because he can beat them with one quick punch.
As you may imagine, his boredom gets him into many interesting situations and leads him on some insane adventures.
As if the original series weren’t crazy enough, writers around the world have created their own worlds and adventures for Saitama
The world of One-Punch Man fanfiction is vast and very diverse.
There are some interesting stories out there that are definitely worth a read.
This article will look at some of the most popular One-Punch Man fanfiction stories according to number of hits received on AO3.
Keep reading to learn more.
1. Class-S and Others Watch One Punch Man
The first One-Punch Man fanfiction story that we will look at today uses a common trope that is seen all over the world of fanfiction.
That is, the characters from a show watching their own show.
Though this trope is different for every fanfiction depending on the author, it often results in an entertaining, and usually comedic story.
In this version, we see all of the Class-S watching One-Punch Man.
Though Saitama is not thrilled about this, he attends the viewing of the show anyway, and he sits amongst all of his friends, and a few enemies, to see what his future holds.
The author of this story has done something interesting in that these characters are not watching events that have already happened.
They are only watching future events and how they will unfold.
It is a lot of fun to see everyone’s reaction and how they predict the future will happen.
Don’t miss out on this popular and exciting story.
2. Ain’t No Place for a Hero
Next up is a One-Punch Man fanfiction that is a bit different from some of the others.
But it is no less popular.
With over 55,000 hits, there is no question that this story is popular among fans of One-Punch Man.
In this story, the reader plays a very important role.
In fact, the reader is the main character of this story.
The author has written this fanfiction in such a way that it feels like we are right in the middle of all of the action.
As the reader, we are a humble heroine who just wants to be left alone by all of the heroes in the world.
We are not especially smart, strong, or brave, and we simply don’t want to be involved in all of the action.
If that premise sounds a bit bland, don’t worry, this story is actually full of action and adventure that you won’t be able to walk away from.
In this alternate universe One-Punch Man fanfiction, things are very different from how we know them to be.
This story features Genos as the main character, and he is the top-ranked S-Class hero, believe it or not.
Though it may seem a bit unusual, this actually makes for a very interesting and exciting story.
While Genos is off astounding everyone with his abilities, Saitama is doing some odd jobs for hire, and he gets into some wacky situations himself.
The big twist is that Genos hires Saitama to be his friend.
As you can probably imagine, this leads to some unusual situations for the two heroes.
The author has done a great job at giving us a unique story that is unlike any other.
There are a few mature themes in this story, so be sure to check out the content warnings before diving in.
4. The Strongest Hero
Next up is a One-Punch Man fanfiction that crosses over with another popular show, My Hero Academia.
(If you want to read more about this, check out the My Hero Academia fanfiction post on this blog!)
Crossovers in fanfiction are often a lot of fun, and this story is no exception.
This story largely focuses on Izuku, who is the main character from My Hero Academia, but the characters from One-Punch Man also play a role.
In this story, Izuku dreams of being the number one hero.
Though he was born without any powers, that is not going to stop him from trying to become more powerful than any other hero.
Luckily, he gets some help from some very powerful heroes along the way.
If you are looking for a story that is packed full of action, this is the one for you.
Even if you are not familiar with My Hero Academia, this is still a story that anyone can enjoy.
5. Enemy Number One
This One-Punch Man fanfiction is actually a series of snippets that have been combined together.
These snippets all work together to form a story, but it is not a linear or typical story progression.
Don’t worry though, it is very easy to follow and make sense of.
This collection is based on the idea that Saitama was considered the most powerful villain and was completely unaware.
The world knows him as a God-level threat, but he is simply living his life completely oblivious.
There are a number of misunderstandings in this story, as you may expect, and they all work to form a story that is exciting and humorous.
Don’t miss out on this fun story.
6. Number One Hero
This story is another crossover between One-Punch Man and My Hero Academia.
It has a very similar premise to the previous crossover mentioned above, but the story plays out in a very different way.
While on his way home from his examination, Izuku happens to run into Saitama, who offers to help him become the number one hero.
These two heroes head out on various missions to help Izuku become more powerful.
Though the premise may not be entirely original, the writing in this fanfiction is superb, and you won’t want to put it down.
7. The Art of Confusion and Punching Things
This One-Punch Man fanfiction is yet another crossover with My Hero Academia, but this one is quite a bit different from the others.
In this story, Saitama is the focus instead of Izuku.
Saitama is thrust into a new dimension, and he is completely unaware of where he is or how he got to be there.
He is surrounded by a bunch of strangers who all seem to be fighting each other.
He comes up with more questions than answers, one of his questions being, “should I be punching anyone?”.
This story is, of course, full of action, but it is also very funny and really well-written.
With over 30,000 hits, it is one of the most popular One-Punch Man fanfiction stories out there.
8. Breaking the Barrier
The next One-Punch Man fanfiction that we will look at is quite a long one with nearly 250,000 words.
It currently contains 53 chapters, and it appears that there are more to come.
As with any One-Punch Man fanfiction, there is plenty of action and punching, but this story also involves quite a lot of romance.
If you love a slow-burn romance, this is the story for you.
In this story, we get to see how Saitama and Tatsumaki mend their relationship and eventually go from friends to lovers.
This is a really sweet story that gets a bit awkward, as neither of these characters knows how to be romantic.
If you are looking for a sweet romance, check out this story.
You will not regret it.
9. All’s Well that Ends Well (All’s Well that Ends)
This One-Punch Man fanfiction is another crossover with, you guessed it, My Hero Academia. These two worlds seem to work so well together that it’s impossible to keep them apart.
This story is a bit different from the others, but we still get to see some of our favorite characters from both of these worlds.
This story opens with Saitama waking up in a hospital, unaware of how he got there or what happened to him.
A doctor enters the room and asks him what his quirk is.
Of course, Saitama says that he does not have one, and it turns out that he is correct.
The story that unfolds is very interesting and exciting, albeit quite brief.
This story has just over 4,000 words, so it makes for a very quick, but interesting, read.
10. Your Problems, My Inconvenience
The final One-Punch Man fanfiction that we will look at is, once again, a crossover with My Hero Academia.
If you haven’t watched My Hero Academia by now, you should probably start.
In this story, several of the characters from One-Punch Man are transported into the world of My Hero Academia.
Because these worlds are so similar, it is hard to tell the difference sometimes, even for the characters who live in them.
The One-Punch Man characters must continue their fight in a new world, and this creates some unusual problems that they are not accustomed to.
This story is one of the best One-Punch Man fanfiction stories, and it is not one to be missed.
One Punch Man Fanfiction: Conclusion
I hope this article has helped you find some great One Punch Man fanfiction!
These 10 are just a small sample of all the amazing stories out there.
So be sure to take a look and find your own favorite among them.
And if you have questions about this topic, feel free to leave a message in the comments below!
Lastly, if you want to read more top fanfiction posts on this blog, then check out: