One common theme could be adventure, where they embark on a journey together. Another might be friendship that gradually turns into something more. However, without reading a large number of such fanfictions, it's hard to be certain of all the common themes.
Naruto's determination could be a key part of his Noble Phantasm. For example, his Noble Phantasm could be a cloak of unwavering resolve that makes him immune to mental attacks and boosts his physical abilities when he is facing extreme odds.
Finding good fanfiction for this specific pairing can be a bit challenging. You might want to join relevant fan communities or forums where fans discuss and share their favorite stories about Ritsuko and Jean d'Arc. There, you can get some great recommendations from other enthusiasts.
One interesting aspect could be the unique combination of Shirou's character from one universe with the RWBY setting. It might lead to new and unexpected power combinations. For example, how his Noble Phantasm abilities would interact with the Grimm in RWBY. Another aspect could be the exploration of Shirou's character in a different context, perhaps showing different sides of his personality as he adapts to the RWBY world.
In fanfiction, Noble Phantasm can enhance 'Harry Potter' by introducing new types of magic battles. Instead of just using regular spells, characters could use the special abilities of Noble Phantasms. This could change the dynamics of duels and battles, making them more exciting and unpredictable. For instance, if a character's cloak of invisibility was a Noble Phantasm, it might have the power to make the wearer completely undetectable by any magical means, including dark magic detectors.
There might be a fanfiction where the Gryffindor sword is turned into a Noble Phantasm. In this story, the sword could have the ability to cut through any dark magic, not just physical objects. It could be a key weapon against a new and powerful dark wizard that the characters in the fanfiction face, and it might have some sort of sentience, guiding Harry and his friends in their battles.
It could be really interesting. Maybe Harry would create a noble phantasm that has the power of his Patronus. Since his Patronus is a stag, the noble phantasm could be a powerful stag - like entity that can charge at enemies and protect those he cares about. It might also incorporate elements of his Gryffindor courage, being unyielding in the face of danger.
One idea could be Naruto obtaining a Noble Phantasm that is related to his Rasengan. Maybe it's a super - powered Rasengan - based weapon that can only be summoned in times of great need. It could have the power to defeat powerful enemies with a single blast.
Well, there might be characters who are masters of Renkin. They would be important as they hold the knowledge and power related to Renkin in the story. There could also be some sort of guardians or protectors of the Renkin world. They would be key in maintaining the balance and order in the world that Jeanne d'Arc enters.
It could be really interesting. Fanfictions often take the original story's elements and expand on them in unique ways. Maybe this 'A Light in the D'Arc Fanfiction' offers a different perspective on the D'Arc character, exploring aspects that the original work didn't fully develop. It might also introduce new relationships or plotlines that keep readers engaged.