Another theme could be the clash of different universes. Amazo is from the DC universe and Saitama is from One Punch Man. Fanfics might play around with how these two different universes' rules and powers interact when these two characters meet. Also, there could be themes related to respect and rivalry. Saitama is often very nonchalant about his power, while Amazo is a complex android with various abilities. How they view each other in the fanfic can create interesting storylines.
Well, finding good 'amazo vs saitama fanfic' can be a bit of a hunt. Some fanfics might focus on an epic battle between the two, while others could explore a more unique scenario like them teaming up against a common enemy. You could also check fanfic communities on Reddit. There are often threads where people share and discuss their favorite fanfics in different fandoms.
One possible plot could be that Tornado initially challenges Saitama out of pride. She sees his nonchalant attitude and wants to prove that her psychic powers are superior. Saitama, being Saitama, just goes along with it. As the battle unfolds, Tornado throws everything she has at Saitama, but he just dodges casually. Eventually, Saitama throws a light punch that knocks Tornado back, but not seriously hurt, which makes her realize his true strength.
Muzan was ultimately defeated by the collective efforts of Tanjiro, Nezuko, and the other demon slayers. Their teamwork and perseverance were key to ending Muzan's reign of terror in the manga.
In a fanfiction scenario between Tornado and Saitama, Saitama would likely win. He's so overpowered that he can defeat any opponent with one punch. Tornado is extremely strong with her psychic powers, but Saitama's strength seems limitless. His simple training routine has made him so powerful that no enemy has been able to withstand his punch so far.
One Punch Superman Saitama VS Tornado was the 191st chapter.
Chapter 191," Tornado's Counterattack ", tells the story of the battle between Saitama and Tornado. The two met on the street and Saitama was provoked by Tornado and was involved in the battle. In the battle, Tornado displayed her powerful strength. She used a type of Qigong wave called "Tornado" to attack her opponent, forcing Saitama to display even more strength to fight against her. In the end, Saitama defeated Tornado through his relentless efforts, demonstrating his unparalleled strength and tenacious will.
One common theme is the exploration of femininity in a typically male - dominated character. Since Muzan is male in the original, making her female in fanfiction allows for a different take on power and how a female demon might rule.