In a fanfic about Freedon Nadd in a reincarnation OC setting, the power dynamics would be crucial. Freedon Nadd was a powerful Sith Lord. If the OC is reincarnated in the same universe, they might have to deal with the lingering influence of Nadd. The OC could either be in a position to oppose him, perhaps with some unique power or knowledge from their past life, or they could be unknowingly influenced by him. This kind of interaction can lead to a great exploration of good vs evil and the struggle for power.
It's also possible that Arjun Reddy is part of a family - centered story. He could be the one who held the family together during tough times, like when there were financial difficulties or family disputes. His character and actions could have been the driving force behind resolving issues and bringing prosperity and harmony to the family.
One unique feature is the combination of different universes. For example, in a Naruto - Bleach crossover, you get to see Naruto's chakra system interact with Bleach's reiatsu. Another is the new character developments. Reincarnation often gives Naruto or other characters new backstories and abilities. Also, it can bring fresh plotlines like in a Naruto - One Piece crossover where Naruto might have to deal with the concept of Devil Fruits in a new way.
One way to incorporate Freedon Nadd is to have the OC discover an ancient artifact related to him. This could trigger memories or visions of Nadd's time, and set the OC on a journey to learn more about this powerful figure. For instance, the artifact could be a Sith amulet that once belonged to Nadd, and when the OC touches it, they start seeing glimpses of his past and the events he was involved in.
The theme of destiny also frequently appears. Many fanfictions suggest that Christina's reincarnation is not a random event but part of a greater destiny, perhaps related to saving the world from some great evil in the Vampire Diaries universe. There's also the theme of power. As she adjusts to her new life, Christina may gain new powers or have to deal with the power struggles among the different supernatural species.
Arjun Talwar's story could be real or a creation of the author's imagination. Maybe it's a combination of real experiences and creative storytelling. Without clear background information, it's tough to determine its authenticity.
Arjun Talwar's story is usually made up. It might draw inspiration from various elements but isn't based on actual events. Authors often use their imagination to craft such tales to engage and captivate readers.