One way is to explore his life before he became a hero. Maybe he had a normal job and was constantly frustrated with the mundanity of it. This could have been the catalyst for his intense training.
A plot where Saitama travels to different dimensions in the One Punch Man universe. He could encounter strange versions of himself or other heroes and villains, leading to humorous and action - packed situations.
Tornado of Terror would likely be one of the first to try and take on Evil Saitama. She's powerful and confident, but she would soon realize the extent of his power. Mumen Rider, despite being weak, would still stand up to Evil Saitama out of a sense of justice. He would be quickly defeated but his act of courage might inspire other heroes to step up.
His hair could also be a plot device in a more comical way. Imagine a situation where his hair has a mind of its own and keeps getting him into embarrassing situations. Like it gets stuck in a door right before a big fight, and he has to struggle to free it while the villain is making fun of him.
The 'One Punch Man Saitama Story' is quite interesting. Saitama is a unique hero. His physical appearance is rather ordinary, but his power is extraordinary. He trained so hard that he lost all his hair and gained the ability to defeat enemies with one punch. In the story, he has to deal with the hero association which has its own rules and politics. Also, he constantly encounters new threats to the city, yet his way of dealing with them is always the same - one punch. However, his interactions with other characters, like his comical exchanges with Genos, add a lot of charm to the story.
Well, a lot of One Punch Man fanfictions about heroes seeing Saitama are really interesting. Some focus on their initial shock at his power. For example, Genos is always in awe of Saitama's strength in the original work, and in fanfictions, this can be explored even deeper, like how he tries to understand the source of that power.
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 way is to introduce a personal conflict for Saitama. For example, he discovers that his extreme strength has unforeseen consequences for the world or for his relationships. This could lead him on a journey of self - discovery. He might have to make sacrifices or learn to control his power in a new way. This arc would show his growth as a character as he grapples with these new challenges.
The people who knew Saitama's true strength in One Punch Superman were Gulisnia, Tolstoy, Silver Fangs, Hungry Wolf, Fast Fist Warrior, and so on. These people had fought with Saitama on different occasions, or witnessed Saitama's ability to defeat other powerful enemies, and thus knew his true strength. I hope you like my recommendation. Muah ~
In One Punch Superman, Saitama was considered the strongest human, and his true strength was still unknown. Although his strength and ability were described as very powerful, no one could be sure of his true strength because he had never been defeated. Saitama often used his own strength to solve problems, and his physical fitness and willpower were very strong, so he was considered a very powerful character.