Well, without reading it specifically, it could be about an ancient bomb in the RWBY universe. Maybe it's a powerful weapon from the past that has been long forgotten and the story could revolve around how the characters discover it, what its capabilities are, and how it might change the power balance in their world.
I'm not sure as it depends on the author of the fanfic. But it could be the main RWBY characters like Ruby, Weiss, Blake, and Yang. They are often the central figures in RWBY - related stories, so they might be the ones dealing with the ancient bomb.
In RWBY fanfic, ancient technology is often depicted as highly advanced and mysterious. It might be shown as powerful relics or devices with capabilities beyond modern understanding. For example, some fanfics could have ancient technology that can manipulate energy in ways not possible with current Dust - based technology in the RWBY universe.
Perhaps there are also some new characters introduced specifically for this fanfic, characters who have a special connection to the ancient gods. They could be guides or guardians of the ancient god lore.
Survival is also a major theme. When faced with these powerful ancient beasts, the characters must fight for their survival. This not only tests their combat skills but also their teamwork and strategic thinking. In some fanfics, the characters are stranded in a territory full of ancient beasts, and they have to rely on each other to make it out alive, which makes for some very tense and engaging storytelling.
The unique thing about 'Ancient Earth RWBY Fanfic' is that it combines the fantastical elements of RWBY with the mystery of the ancient earth. It allows for a different kind of world - building that we don't usually see in the main RWBY series.
One common theme is adventure. The discovery and exploration of the ancient warships often lead the RWBY characters on exciting adventures. Another theme is mystery. The origin and purpose of these ancient warships are usually shrouded in mystery, which the characters have to solve. Also, there's often a theme of power. The ancient warships usually possess some kind of great power that can change the balance in the RWBY world.
A 'naruto spirit bomb fanfic' could be centered around the spirit bomb concept borrowed from Dragon Ball. In Naruto's world, it might be a fan - created story where Naruto discovers a new power that is similar to the spirit bomb. This could be due to some sort of cross - dimensional event or an ancient power that was hidden in the Naruto universe all along. It might also be a way to bring together different ninja clans to contribute their energy to create a super - powerful attack.
One way is to have it as a new invention by a mad scientist character in the Pokemon world. This scientist could be trying to create a weapon to control the Pokemon population or gain power over a certain region.
In a Pokemon fanfic, a fire bomb might be a plot device. It could be used to start a big conflict, like a battle between two powerful Pokemon trainers or groups. For example, a group of poachers might use a fire bomb to try and flush out rare Pokemon from their hiding places, which would then lead to the heroes of the fanfic trying to stop them.