In some fanfictions, Genos could be hurt by a villain who targets his emotional side. The villain might find out about Genos' past, his desire to become stronger, and use that against him. They could manipulate his memories and make him experience the pain of his past all over again, which causes his mental state to deteriorate and also affects his physical functions as his mind and body are connected.
One way is to put Genos in a situation where he's outnumbered. As the enemies attack him from all sides, his defenses are slowly broken down. The writer can describe the attacks hitting him one by one, each causing more damage. They can also make the reader feel Genos' desperation as he realizes he might not be able to survive this time. And then, there's the aftermath. How does he deal with the pain and the damage? Does he become more determined or does he start to doubt himself? These are all aspects that can make a hurt scene for Genos impactful in a fanfiction.
One possible scenario could be Deidara getting seriously injured during a battle with a powerful enemy. Maybe he underestimates his opponent and ends up with life - threatening wounds. His comrades might be too far away to help immediately, leaving him to struggle alone.
One scenario could be Hiccup getting seriously injured during a dragon fight. Maybe he's protecting Toothless and takes a direct hit from another dragon's attack. This could lead to a story of his slow recovery, with his friends and family rallying around him.
In a fanfiction, perhaps Deadpool is mind - controlled and attacks Spider - Man. Spider - Man is hurt both physically and emotionally because he can't understand why his friend would turn on him. He tries to reason with Deadpool but to no avail, and in the process, he sustains several injuries that leave him in a very vulnerable state. This could explore themes of trust and betrayal.
One scenario could be Naruto being forced to choose between the safety of the village and Boruto's life in a dangerous situation. Maybe he has to send Boruto on a near - impossible mission for the greater good, which really hurts Boruto as he feels abandoned by his father. Another could be Naruto being under a genjutsu and unknowingly attacking Boruto, causing physical and emotional harm.
One scenario could be Minho getting seriously injured during a dangerous maze run. Maybe he gets attacked by a griever and sustains deep wounds. His friends would then be in a panic, trying to get him back to safety while also fearing the worst for him.
One interesting fanfiction storyline could be that Genos discovers a prophecy that Saitama is going to lose his powers. Genos then goes on a mad quest to find a way to prevent this from happening. He visits all kinds of strange places and consults with various powerful beings. Another could be that there is a competition among heroes to see who can train the best new recruit, and Saitama and Genos enter together. They face off against other hero - trainer pairs in various challenges. Also, a story where Genos creates a virtual reality world for Saitama to experience different kinds of battles that he normally wouldn't encounter in the real world, just for Saitama's amusement.
A great storyline could involve female Genos exploring her new - found femininity while still maintaining her badass fighting skills. Maybe she gets invited to a hero - only fashion event and has to figure out how to balance looking glamorous and being ready to fight any villains that might show up. Or perhaps she teams up with other female heroes to form an all - female hero squad and they take on a super - powerful male villain who underestimates them.
Another possibility is that Troy is hurt in an accident outside of his Power Ranger duties. This forces him to deal with his vulnerability and the fear that he might not be able to return to his role as a Power Ranger. His friends then have to support him through his recovery both physically and mentally.
One popular storyline could be them going on a training journey together. Genos, being the eager learner, and Saitama, with his overpowered strength, could teach Genos new techniques in unique ways. Another could be them facing a new, extremely powerful villain that challenges even Saitama, and Genos has to step up in unexpected ways to assist. A third one might be a story where they get transported to a different dimension and have to find their way back while dealing with the strange new world and its inhabitants.