One common trope is the power - up. Characters from Naruto might bring their powerful jutsus into the Shield Hero world and get stronger in new ways. Another is the friendship aspect. Just like in Naruto, characters form strong bonds in these crossovers.
Yes, the 'Rising of the Shield Hero' novel is completed. It provided a conclusive resolution to the various story elements and character developments that were introduced throughout the series. Many readers were pleased with how it all came together in the end.
The relationship between Naofumi and his companions also forms great stories. For example, his bond with Raphtalia, who grows from a weak slave to a strong fighter under his guidance. Their story is full of growth, loyalty, and mutual support.
There are some great ones. For example, there are fanfictions that explore how the abilities from Naruto would be perceived in the Rising of the Shield Hero setting. Maybe a Sharingan - like ability could give the protagonist an edge in combat in a different way compared to the skills in the original Shield Hero story.
One interesting crossover could be the characters from Naruto learning about the unique shield abilities in Rising of the Shield Hero. For example, Naruto might be intrigued by Naofumi's shield and how it can transform and be used in different ways. Another aspect could be the ninjas from Naruto teaching the heroes in Shield Hero some of their combat techniques.
Yes, it is. The story has an interesting premise with a unique take on the isekai genre. The protagonist is a shield hero who has to face various challenges and prejudices in a new world.