There are strict rules against promoting or providing access to lemon (adult - themed) fanfiction. Instead, consider exploring regular Bakugo and Uraraka fanfictions. You could search for ones that explore their teamwork, how they grow as heroes, or their interactions in different scenarios at school or during battles. This way, you can enjoy their relationship in a more appropriate and positive light.
Another aspect is their relationships with other characters. You could write a fanfiction where Bakugo and Uraraka's friendship (or rivalry) affects their relationships with Deku. Maybe Bakugo's attitude towards Deku changes because of his growing respect for Uraraka, or Uraraka tries to mediate between Bakugo and Deku to make their group more cohesive.
As of the latest chapters, Izuku and Uraraka have shown some mutual interest and closeness, but it's not a definite romantic pairing yet. It's still evolving in the story.
In some fanfictions, new original characters are introduced. These new characters are designed to be a potential threat to Uraraka's relationship with Deku. They might be transfer students with amazing quirks who immediately take an interest in Deku. Uraraka then sees this new character getting close to Deku and becomes jealous, leading to various conflicts and emotional drama in the fanfiction.
One possible analysis could be that their relationship in fanfic often showcases a strong bond of friendship. Bakugo's explosive personality and Kirishima's more stable and friendly nature create an interesting dynamic. Fanfic writers may explore how they support each other during battles or in their daily lives at school. For example, Kirishima might be the one to calm Bakugo down when he gets too riled up, and Bakugo could inspire Kirishima to be more confident in his abilities.