Often, it portrays their relationship as a complex and passionate one. Bruce's dual identity adds a layer of secrecy and danger to their love. Rachel might be shown as a source of light in Bruce's dark world.
Often, it portrays it as a complex and taboo relationship. Since Lestrange is from a different, often darker side of the wizarding world, and Hermione is a well - known 'good' character. Their relationship might be shown as a struggle between different ideologies and loyalties.
In these fanfictions, their relationship can be seen as a journey of self - discovery. Since they are both in a more human context, they learn about each other's personalities in a different light. For example, Kagome might discover that Inuyasha has a hidden talent for painting when he is human, which deepens their connection.
Some fanfictions show their relationship development in a more modern - day - ish way. They might be in a situation where they have to go to modern - day events like a festival in the Hidden Leaf Village. Here, they get to see each other in a different light, outside of their ninja roles. Sakura might show off her skills in something like cooking at the festival, and Sasuke might be impressed, leading to a new level of their relationship.
Often, it portrays their relationship as a complex and passionate one. Hades is shown as the brooding and powerful lord of the underworld, while Persephone is the innocent and beautiful goddess. Their relationship evolves from a sort of captor - captive situation to a deep and loving bond.
One interesting story could be about Bruce's internal struggle between his love for Rachel and his duties as Batman. Maybe in the fanfiction, he tries to find a way to have a normal relationship with her while still protecting Gotham.
You could also say their relationship is one of contrasts. Bruce is dark, brooding, and lives in the shadows as Batman, while Rachel is a symbol of light, justice in the legal sense. She represents the hope that Gotham can be saved through the law, while he takes a more direct and often violent approach. Their love bridges these two different worlds, at least for a while.
Often, it starts with a moment of realization. Maybe a magical event or a deep emotional conversation that makes them aware of their soulmate bond. Then they gradually learn to trust and rely on each other more. For example, in some fanfics, they start to have a mental connection that allows them to communicate without words, which deepens their relationship quickly.
Frequently, fanfiction shows their relationship as one full of potential. Molly is often portrayed as the one who can break through Sherlock's cold exterior. She might do this through her kindness or her ability to see the man behind the brilliant detective. Some fics also explore the idea of Sherlock being protective of Molly, which is a contrast to his usually detached nature. This shows how their relationship can bring out different sides of both characters.
Often, it portrays their relationship as a sort of unexpected but exciting connection. At the Yule Ball, they might be shown as two people who are initially awkward but then gradually warm up to each other.
Well, in such a fanfic, it might show Bruce Wayne as a completely different entity from Batman. Maybe Bruce is just a normal rich guy who has no idea about the vigilante activities of Batman. He could be living his own life, focused on business and social events, while Batman is someone else entirely, perhaps an unknown figure with no connection to the Wayne family.