In nephilim books fiction, nephilim are often depicted as powerful beings. They usually possess superhuman strength, for example, being able to lift heavy objects or fight with great force.
One common theme is the struggle between good and evil. Since nephilim are often part - angel, they are usually on the side of good but have to face various evil forces. Another theme is identity. Nephilim are not fully human or fully angel, so they often struggle with who they are.
Yes, there are some interesting Naruto Nephilim fanfictions out there. Some offer unique takes on Naruto's character in a world with Nephilim elements. It really depends on your taste for how the two concepts are blended.
One popular tensura fanfic might be those that explore different character relationships. For example, stories that focus on Rimuru's interactions with his newly formed kingdom's citizens in more in - depth ways. It could show how his leadership impacts individual lives.