Saitama's true strength was recognized by many in One Punch Superman. With the help of his neighbor and teacher, Dr. Orochi, people gradually understood his strength. Dr. Orochi had once told Saitama that he had powers beyond that of a human, and that he could strengthen himself through training. In addition, Saitama's teacher, Hungry Wolf, also called him the " strongest human." In addition, other characters such as Superman and Atom also acknowledged Saitama's strength.
Saitama is a very powerful hero in the One Punch Man universe. He can defeat any opponent with just one punch. He has a simple appearance and a somewhat laid - back personality.
Genos could be an unexpected opponent. He might be forced to fight Saitama due to some mind - control or a misunderstanding in the rules of the tournament. It would be really interesting to see how Saitama would handle fighting his own disciple, and how Genos would fare against his master's incredible strength.
Well, Saitama All Fiction could potentially refer to a fan - created idea that emphasizes Saitama's ability to be above all the normal rules of the fictional One Punch Man universe. For example, his strength is so overwhelming that it's like he exists in a realm of his own, where the typical limitations of the story don't really apply to him. He can defeat any foe with just one punch, and this 'All Fiction' concept might be an attempt to explain how and why he's so powerful in such a ridiculous way.