There are fanfics where the 'lov capture deku' scenario leads to an exploration of Deku's character growth. For example, while captured, he might start to understand the motives of the LOV members on a deeper level, which in turn changes his approach to heroism in the story. This can add a lot of depth to his character.
You can start by searching on popular fanfic websites like Archive of Our Own. Just type in 'lov capture deku fanfic' in the search bar and it will show you relevant stories.
In the 'bnha reacts to villain deku fanfiction', different characters would have diverse reactions. Uraraka would likely be heartbroken. She has always seen Deku as a source of inspiration and a good friend. So, seeing him as a villain would shatter that image for her. The teachers, like Aizawa, would be concerned about how the situation came to be. They would probably start to question their own teaching methods and the environment that led Deku to become a villain.
In 'bnha reacts to villain deku fanfiction', the plot might develop as the heroes try to stop Deku from causing more harm. But at the same time, they are conflicted because they know the old Deku. This internal struggle among the characters could lead to some interesting sub - plots. For example, some might try to reach out to Deku secretly to bring him back to the good side, while others might be more aggressive in their approach to stop him.
Well, they might be shocked at how much technology has advanced in the future depicted in the fanfiction. Maybe there are new types of elemental powers or different ways of training ninjas. It could also be that the relationships between characters have changed in unexpected ways, and they would have to come to terms with that.
They might gain a new perspective on their own abilities. If the future fanfiction shows ninjas with enhanced powers, the past characters could start to think about how they could develop their skills further. For example, if in the future they can combine elemental powers in new ways, the past ninjas might start experimenting.
One common theme is probably the 'opposites attract' scenario. For example, a very bubbly and outgoing character falling for the more reserved Suga. Another theme could be 'finding love in unexpected places', like on a tour or during a random encounter.
Deku's experiences with being bullied for not having a quirk. This would be important because it shaped Deku's character and his insecurities. Aizawa might focus on this to better understand the root of Deku's drive and his sometimes over - eager nature to prove himself. It also gives Aizawa more insight into why Deku is so desperate to be a hero despite the odds.
Well, you can check out Archive of Our Own (AO3). There are many fanfics there about BTS Suga in a loving situation. Just search for 'bts suga in lov' on the site and you'll find a variety of stories written by different fans.