One popular fanfiction concept could be Deku proving his worth without a quirk in the Bakudeku relationship. Maybe he uses his intelligence and strategic thinking to assist Bakugo in battles. For example, he could analyze opponents' weaknesses and come up with battle plans that Bakugo can execute. This would show that even without a quirk, Deku is an important part of their duo.
A common theme is the underdog story. Deku, being quirkless, is the ultimate underdog. He has to fight against the odds and the prejudice of a world that values quirks highly. This makes for a very compelling story as he overcomes these obstacles, often with Bakugo by his side or as his motivation.
Uraraka would be heartbroken. She was one of Deku's closest friends. She might lose some of her usual cheerfulness and become more focused on finding out who or what was responsible for his death. She could also struggle with her own self - confidence in using her quirk, as Deku was always an inspiration to her.
Well, I'm not sure about a specific 'deku x bakugou dies fanfiction' that is the best. However, many fanfiction writers might explore this concept in different ways. Some might focus on the emotional aftermath for the other characters, while others could create alternate universes where this event leads to a whole new set of adventures or challenges for the remaining characters in the My Hero Academia universe.
One popular 'deku dies' fanfiction might be those that explore the impact of his death on the other characters in the My Hero Academia universe. For example, it could show how his friends like Bakugo or Ochaco react to his sudden demise. They might struggle with guilt, as in some stories Bakugo has bullied Deku in the past. His death could also be a catalyst for change in the hero society, making heroes reevaluate their values and the way they protect civilians.
You can also try Fanfiction.net. Although the interface might not be as modern as AO3, it still has a vast amount of fanfiction. Search for the relevant keywords there too. Additionally, some Tumblr blogs might also share or recommend such fanfictions. You can search Tumblr using relevant tags like #deku x bakugou dies fanfiction.
In this fanfic, it could be that Deku's quirk goes out of control during a training exercise. He loses the ability to contain his power and it ends up consuming him, resulting in his death. This would create a lot of self - reflection among the other students about the risks of their quirks and the importance of proper training and control.
Bakugo would be deeply affected. He might initially deny his feelings, but then would be filled with guilt for all the times he was mean to Deku. He could become more withdrawn and focused on becoming a hero worthy of Deku's sacrifice.
Well, sometimes in these fanfictions, Deku's death can lead to a split in the hero community. Some might think that the way heroes operate needs to change drastically because Deku, who was seen as a symbol of hope, died. There could also be a plot where Deku's mother has to deal with the loss, and this could show a more human side of the story. And, his death might inspire a new generation of heroes who didn't know him personally but were inspired by his story to step up and fill the void he left.
Writers sometimes have the characters' emotions lead to character development. For example, Bakugo might become more empathetic after Deku's death. He could start to understand the value of Deku as a person and a hero. Other characters could also find new motivation in their grief, vowing to carry on Deku's ideals in his memory.