Well, a new Overlord RWBY fanfic might feature unexpected crossovers between the two universes or explore previously unexplored character relationships. It could also introduce new villains or challenges for the heroes to overcome.
Maybe it's the 'overlord' concept. Most RWBY fanfics might focus on the regular storylines within the RWBY world, like the battles against Grimm and the development of the four main characters. But 'A new overlord RWBY fanfic' could introduce a new power structure or a different kind of antagonist based on the 'overlord' idea, which would set it apart from others.
Well, I haven't actually read this specific fanfic yet. But generally in RWBY fanfics, good parts could be the unique character interactions. Maybe in 'A new overlord RWBY fanfic', the new take on the relationships between the main RWBY characters like Ruby, Weiss, Blake and Yang could be interesting. It might also have cool fight scenes that are written in a more creative way compared to the original series.
One plot idea could be that a character from RWBY gets transported to the world of Overlord. They might have to navigate the power - hungry and often dangerous world, trying to find a way back home while also dealing with the various powerful beings in Overlord. For example, Ruby could end up in the Tomb of Nazarick and have to figure out how to interact with the Floor Guardians without getting killed.
The 'Overlord Last Novel' might showcase the full extent of Ainz's power and intelligence as he makes his final moves in the New World. It could also highlight the development of the secondary characters, like how they either support or oppose Ainz in the end. There may be a big revelation about the world's secrets that changes everything we thought we knew about the 'Overlord' universe.
The exploration of new regions in the Overlord world is a significant highlight in Volume 15. We get to see different cultures, new magic systems, and unique creatures. It broadens the scope of the entire story and gives readers a fresh perspective on the world that has been created in the light novel series.
The new fanfic might have unique character developments based on the nindo concept. It could also introduce fresh plot twists and challenges for Naruto and his friends.
I think Ruby would be really interesting. Her optimistic and fearless nature in RWBY would contrast well with the often dark and power - based world of Overlord. She could bring a sense of hope and naivete that would either endear her to the Overlord characters or make her a target. Also, her scythe - wielding skills and her use of her speed Semblance could be unique in the Overlord world.
One possible highlight could be the development of new characters. 'Overlord' often introduces interesting characters, and this volume might be no exception.
One interesting RWBY Overlord fanfiction could be one where the characters from RWBY are transported to the world of Overlord. They might have to adapt to the new and often darker and more dangerous rules of that world. For example, Ruby could be intrigued by the magic system in Overlord and try to learn it while also facing the threats of the various powerful entities there.
The unique aspect of Overlord RWBY fanfics is the blend of two very different universes. Overlord has its dark, power - based hierarchy and complex magic systems, while RWBY has its own diverse world with unique characters and a different kind of power called Aura. When combined, it creates a whole new set of story possibilities.