Dabi could be a great character to pair with Tomura. They are both villains and their powers and personalities could create some interesting interactions. Maybe they could team up for a particularly difficult mission or have a power struggle within the League of Villains.
A common theme is the clash of powers. When Tomura crosses over with other universes, his own powerful abilities often come into conflict with the powers of the characters in those universes. For example, in a crossover with the X - Men, his decay power is pitted against the mutant abilities of the X - Men.
One aspect of Mha Tomura x Himiko fanfiction could be the exploration of their unique relationship dynamics. Tomura's complex character, with his goals and his own brand of villainy, and Himiko's rather eccentric and blood - loving nature can create some really interesting interactions. Writers might delve into how they understand each other on a deeper level, perhaps sharing a common view of the world that is different from the heroes' perspective.
Fanfiction often takes liberties with the relationship between Izuku and Toga. It could also involve them teaming up against a common enemy. This would require them to put aside their differences and work together. Writers can use this to create exciting action - packed scenes and explore how they would communicate and cooperate in such a situation.
Toga is still alive in the manga. The creators haven't decided to end her character's journey with death. Usually, such major plot points are well-signaled and haven't happened for Toga so far.
Popular tomura x deku fanfic often focuses on the contrast between their characters. Tomura is a villain - like character and Deku is a hero. Their interactions, which are a blend of conflict and potential understanding, are a major draw. For example, in many fanfics, they start off as enemies but as the story progresses, they might see each other in a new light.
One great tomura x deku fanfic is 'The Unlikely Bond'. It delves into a world where Tomura and Deku have to team up against a common enemy and in the process, start to understand each other on a deeper level. The story has a great plot with well - written action scenes and character development.