Well, a lot of fanfiction might focus on the family dynamics of the Rock Parents. They might struggle to raise their children in such a dangerous and lawless place. There could be stories where they teach their kids important values despite the harsh environment, or how they balance their parental duties with their own survival in the Black Lagoon.
Often, their children can also be important characters in the fanfiction. Their relationship with the parents and how they grow up in the Black Lagoon environment can be a central part of the story. And there may be other recurring characters from the Black Lagoon series who interact with the Rock Parents, like some of the pirates or mercenaries.
The combination of the 'Black Lagoon' setting and the harem genre. 'Black Lagoon' is known for its gritty, action - packed world, and adding the harem element brings in new relationship dynamics. It's interesting to see how the tough characters from 'Black Lagoon' interact in a more romantic or complex relationship setting.
One interesting fanfic could be one that focuses on the backstories of the characters in more depth. It might explore how they ended up in the world of Black Lagoon before the events of Rock Dies. Another could be a fanfic that takes a different turn in the story, like Rock making a different choice at a crucial moment, which then changes the whole dynamic of the story.
One plot idea could be that Gretel and Rock are forced to team up during a dangerous mission in the criminal underworld of Black Lagoon. They have to rely on each other's skills, with Gretel's combat abilities and Rock's strategic thinking to get out alive.
A fanfiction could explore a scenario where Rock and Balalaika are stranded together in a remote location after a deal goes wrong. They have to rely on each other to survive, which is a huge change from their normal relationship in the show. As they struggle, they start to understand each other on a deeper level.
One idea could be exploring the backstories of the mercenaries in more detail. For example, delving into how Revy became such a skilled fighter. Another could be creating a new mission for them that involves a powerful and mysterious enemy. Maybe a shadowy organization that has ties to their pasts.
Perhaps a plot where Balalaika is in trouble and Rock, using his unique skills and knowledge, tries to rescue her. This could lead to a deeper bond between them as they fight their way out of difficult situations together. In the process, Rock might learn more about Balalaika's past and what made her who she is today.
One interesting fanfic could be about the origin stories of the characters in 'Black Lagoon Rock Snaps'. It might explore how they got involved in the dangerous world depicted in the series. Another could focus on a particular relationship between two characters, like their friendship or rivalry. And there might be a fanfic that takes a side character and gives them a more central role, showing a different perspective of the story.
One common theme is the contrast between Rock's civilized background and the wild, lawless world of Black Lagoon, especially when it comes to rock music. The music can act as a bridge or a source of conflict.
Perhaps a fanfic where Rock and Revy get stranded on an island during one of their smuggling runs gone wrong. They have to rely on each other to survive, and in the process, they start to understand each other better. Revy learns more about Rock's ideals and Rock gets a deeper insight into Revy's survival instincts.