One of the main themes is the concept of power. In the One Punch Man novel, Saitama's overwhelming power makes him bored as he can defeat any enemy with one punch. Another theme is heroism. It shows different types of heroes, from those like Saitama who are truly powerful but unrecognized at first, to others who are more interested in fame and glory.
You can find 'One Punch Man' fanfictions on websites like FanFiction.net. It has a large collection of fan - created stories related to 'One Punch Man'. There are different categories and ratings, so you can easily filter and find the ones that suit your taste.
A common theme is the clash of powers. Since Deku has his own set of powers from My Hero Academia and he's in the One Punch Man world, there's often exploration of how his powers compare to the likes of Saitama's. Another theme is adaptation. How does Deku adapt to this new and very different hero environment.
One common theme is power comparison. Since Saitama has such overwhelming power in One Punch Man, fanfictions often explore how that power stacks up against the Huntsmen and Huntresses in RWBY. Another theme is the clash of different worlds. The modern, somewhat comical world of One Punch Man and the more fantasy - based RWBY world coming together creates interesting scenarios.
The theme of adventure is also prevalent. Fangirls take their characters on adventures through the various locations in the One Punch Man world. They might explore the strange and dangerous places, face off against powerful monsters, or uncover secrets about the world that weren't known before. This allows for a lot of action and excitement in the fanfiction, and it also gives the fangirl character a chance to prove herself and grow.
One common theme is power and powerlessness. In the context of slavery, characters who are slaves often lack power, while those in control have a lot. This is interesting when compared to the normal One Punch Man setup where Saitama has all the power.
Another theme is the clash of different hero cultures. My Hero Academia has a more structured hero society, while One Punch Man is more about individual heroism. Fanfics might show how these two concepts interact or conflict. For example, how would the heroes in BNHA react to Saitama's laid - back approach to heroism? It can make for some really interesting character dynamics and storylines.
One common theme is the clash of power levels. One Punch Man is known for its extremely powerful characters like Saitama, while Undertale has a range of characters with different abilities. Fanfictions often explore how these different power levels interact. For example, how would Saitama's one - punch ability fare against the powerful bosses in Undertale? Another theme is the exploration of different worlds. The two universes are very different, and fanfictions like to play with the idea of characters traveling between the two. It can be a really interesting concept as they bring their own cultures and values with them.
Character growth is also a big theme. For example, some fanfics might have characters from One Punch Man learning about the importance of teamwork from the Persona 5 crew, or the Persona users becoming more confident like Saitama. Additionally, the exploration of different worlds is a theme. How would the normal world of One Punch Man react to the Metaverse of Persona 5 and vice versa? There are many possibilities that fanfic writers like to play with.