One idea could be that Mob and Saitama accidentally switch powers for a day. Mob would be super strong but struggle with his usual self - control, while Saitama would have to deal with Mob's psychic powers which he has no experience with.
Maybe there's a villain who can nullify psychic powers and is immune to physical attacks. So Mob and Saitama have to team up in a very different way than they're used to. Mob has to use his physical combat skills he learned from Reigen, and Saitama has to rely on Mob's friends to help come up with strategies since his usual punch won't work.
A great fanfiction concept is a crossover where the villains from One Punch Man and Mob Psycho team up. It would be a huge threat, and then the heroes from both series would have to combine their efforts. In this kind of fanfiction, we could see some epic battles and unique character interactions.
I really like 'Psychic Punch'. In this fanfiction, Mob's psychic powers and Saitama's physical strength are pitted against a common enemy. The writer does an excellent job of showing how their different powers could work together. It also has some really cool fight scenes that are exciting to read.
Yes, there are. You can find some really interesting ones on fanfiction platforms. Some fanfics might focus on crossovers where the characters from both series interact in unique ways, like Mob and Saitama teaming up to face a new kind of threat that combines psychic and physical challenges.
A great plot would be if the two universes somehow merged, and Mob and Saitama had to deal with the chaos. Mob might be freaking out about all the new strange things he's seeing, while Saitama is just casually walking around looking for some cheap groceries. Then they get pulled into a fight against a group of villains who are causing mayhem in the newly merged world. They learn to combine their skills and defeat the villains, and in the process, Mob learns a thing or two about being confident from Saitama.
Definitely Mob and Saitama. Their personalities are so different. Mob is a shy and emotional high - school boy with powerful psychic abilities, while Saitama is a bored and seemingly emotionless hero who can defeat any enemy with one punch. Their interactions would be full of comical misunderstandings and also opportunities for character growth.
First, you need to understand the characters well. Know their personalities, their powers, and what makes them unique. For example, Mob's emotional state affects his psychic powers, and Saitama is always looking for a worthy opponent. This knowledge will help you write them accurately.
The unique powers of the characters. Saitama's one - punch strength and Mob's psychic powers are very different yet equally fascinating. Writers can create all kinds of scenarios with these powers interacting.
You can try Archive of Our Own (AO3). It has a large collection of fanfics from various fandoms, including 'Mob Psycho 100 x One Punch Man'. The tagging system there makes it easy to search for the specific crossovers you're interested in.
A crossover with Jujutsu Kaisen would also be cool. Mob and Yuji could team up against curses. Since Mob has such strong psychic powers and Yuji has his physical strength and Sukuna's power, they could combine their abilities in unique ways. For example, Mob could use his psychic powers to hold a curse in place while Yuji delivers a powerful physical blow.
Well, you could write a fanfiction about Mob's family. For example, how his older brother's life was affected by having a psychic younger brother. Maybe there were times when he was jealous or proud in ways that haven't been explored much in the original. Or a story where Mob uses his powers to help people in a more global sense, like solving international disputes with his psychic abilities, which would be a very different take on the usual small - scale problems he faces in the anime.