Some fanfictions explore the emotional and mental states of Saitama and Boros during the fight in more depth. Maybe Saitama is actually feeling a bit more than his usual apathy during this fight, or Boros has some deep - seated reasons for his obsession with finding a worthy opponent that are explored during the battle. There could also be fanfictions where other characters get involved in the fight in unexpected ways, like Genos trying to interfere for some reason or an alien race observing and then getting involved in the fight.
A lot of fanfictions play with the idea of Boros having some hidden power or strategy that makes the fight more intense and less one - sided than in the original. For example, he might have a power - up that actually challenges Saitama for a while. Another plot could be a time - travel twist where someone goes back in time to change the outcome of the Saitama vs Boros fight, which then has all kinds of consequences for the One Punch Man universe.
Well, some dedicated anime fan communities might also be a good place to look for such fanfiction. For example, Reddit has sub - reddits related to One Punch Man where fans might share or recommend their favorite 'Saitama vs Boros' fanfictions. Also, Tumblr often has fan - created content including fanfiction, so it's worth a search there too.
One possible storyline could be Boros surviving his encounter with Saitama and then seeking redemption. He realizes the vastness of Saitama's power and decides to train under him. This would be an interesting twist as Boros was initially a villain. Another could be a what - if scenario where Saitama and Boros team up to face an even greater threat that arrives on Earth. It would show their dynamic as they work together, with Saitama's nonchalant attitude and Boros' more serious and battle - hungry nature.
Some fanfictions might explore the emotional aspect of their fight. For example, how their past friendship affects the battle. Maybe Kakashi hesitates to strike a fatal blow because of their shared history.
One common theme is the exploration of power dynamics. Since Saitama is extremely powerful and Boros was a very strong foe, fanfics often play with how their powers interact. Another theme is redemption. Boros was defeated by Saitama, and some fanfics have him seeking redemption or a new way of life. Friendship is also a theme. Despite their initial fight, they could potentially become friends in some fan - created scenarios.
One interesting plot could be Saitama arriving in a world full of magic. He might be confused at first by the new rules. For example, instead of using his physical strength directly, he has to figure out how to use magic to defeat powerful magical creatures. Another plot could be Saitama befriending a group of underdog adventurers. They initially doubt his abilities but are soon amazed as he effortlessly takes down the toughest foes. He could also end up in a world where there's a tournament to decide the strongest being, and Saitama, being his usual self, just wants to participate for the fun of it but ends up dominating the whole thing.
There could be a Boros OC fanfiction where the OC is a scientist who tries to understand Boros' power source. This would involve a lot of research, experiments, and perhaps some dangerous encounters with Boros' minions as they try to get closer to the truth.
In a Saitama vs OC fanfiction, a plot twist could be that the OC has the power to make Saitama lose his strength. However, the OC doesn't want to use this power because they admire Saitama and want to test their own strength against him fairly. Another interesting twist could be that the OC is a part of a bigger plan by some mysterious organization. They use the fight against Saitama as a distraction while they carry out their real objective elsewhere. And as the fight progresses, Saitama realizes this and has to decide whether to continue the fight or go after the real threat.
One possible plot could be that in this fanfiction, an alternate dimension where Saitama is a cannibal. Maybe there's a virus that has infected him and turned his moral compass upside down. Writers might explore how the other heroes react to this new, terrifying Saitama. Do they try to cure him? Or do they see him as a threat and try to stop him by force?
First, understand the characters well. Saitama is bored with his power and just wants a good fight, while Boros is a proud and powerful alien seeking a worthy opponent. Then, come up with a unique plot. Don't just rehash their fight from the original. Maybe create a new world or situation for them. For example, a world where all heroes have lost their powers and Saitama and Boros have to work together to save the day. Also, good dialogue is key. Make it sound like how the characters would actually talk. Saitama's simple and straightforward speech and Boros' more grandiose way of speaking.
One interesting plot could be a competition between them for a powerful magical artifact. Percy uses his water - based powers, Jason his lightning and flight, and Nico his control over the dead to outwit each other in a race to find it.