Well, the idea of Villain Deku often involves a dark twist on the usually heroic Deku. In some fan concepts, it might start with Deku being pushed too far, perhaps by the constant bullying in his past and the overwhelming pressure of being a hero. He could start to question the hero society's values and see its flaws more clearly. Eventually, he might decide to take matters into his own hands in a more unorthodox and villainous way, using his One For All power not for the greater good but for his own sense of justice that goes against the norm.
One aspect of deku and midnight love fanfiction could be exploring their relationship in an AU (alternate universe). Maybe in a world where Deku isn't just a student but an equal hero to Midnight, and their relationship develops from mutual respect to something more romantic. They might go on adventures together and discover new feelings along the way.
Well, without reading the 'bunny ia a deku fanfic' specifically, it could potentially be a story where the character Bunny is a big fan of Deku. Maybe it shows Bunny's admiration for Deku's heroic deeds, like how Deku saves people with his One For All power. It could also explore Bunny's relationship with Deku in a fan - made universe, perhaps Bunny tries to be like Deku or helps Deku in some way.
The main differences are in their expressions and some minor details of personality. In the manga, Deku might seem a bit more intense, while in the anime, he's sometimes presented a bit softer.
Deku might be completely shocked at first. Since Bakugou has always been so aggressive towards him, he would never expect such a confession. He might just stand there, mouth agape, not knowing what to say.
His friends could come to the rescue. Bakugo, for instance, might use his explosive power to break into Toga's hideout. He's always been competitive with Deku, but he also cares about him deeply.
In 'deku meets future deku fanfiction', perhaps the future Deku warns the present one about upcoming threats. He could tell him about villains he'll face in the future and how to defeat them. This would give the present Deku an edge in his battles and also in his growth as a hero.
Well, obviously Deku in two forms - the younger and the older version are the main characters. The younger Deku is the one who is still growing and learning, while the older Deku has more experience.
One possible plot could be that Villain Deku is on a mission to undermine the hero society and crosses paths with Hero Deku. They engage in a fierce battle where Villain Deku taunts Hero Deku about his ideals. In the end, Hero Deku manages to get through to a small part of Villain Deku's conscience, leaving him with some doubts about his villainous path.
Another possibility is that a new villain emerges as a result of the time - travel or whatever mechanism brings future Deku to the present. This villain could be from a future where Deku's actions (or inactions) have led to a more dangerous world, and he travels back in time to stop Deku from making those mistakes again. However, his methods are extreme and dangerous, making him the antagonist of the story.