Well, there are plotlines where the Ice Dragon Slayer discovers a connection between the dragons in their own world and some of the powerful beasts in the Naruto world. This could lead to a whole adventure of uncovering secrets and ancient powers. Also, the Ice Dragon Slayer might get involved in the Chunin Exams in a unique way. Maybe they use their ice powers to create amazing displays during the exam battles, impressing the judges and the other ninja. And then there are those plotlines where the slayer has to face off against a new, ice - themed villain who is threatening the balance of the Naruto world.
One popular plotline could be the Ice Dragon Slayer character from a different world ending up in the Naruto universe. They might have to adapt to the ninja world while also using their ice dragon slaying abilities in unique ways, like fighting the Akatsuki. Another could be the Ice Dragon Slayer training Naruto or some of the other ninja in ice - based techniques, which would be a new and interesting addition to the existing jutsu in the Naruto world. And sometimes, there's a plotline where the Ice Dragon Slayer has a hidden past related to an ancient clan in the Naruto universe that gives them special powers or a mission to fulfill.
One popular plotline could be the character who is a Black Fire Dragon Slayer in the Naruto universe having to face off against powerful ninja foes. Maybe they use their unique fire - based abilities to take on Akatsuki members. Another could be the slayer teaming up with Naruto and his friends to protect the Hidden Leaf Village from a new, unknown threat that only their combined skills can defeat. And sometimes, there are plotlines where the slayer has to master their powers while also dealing with the politics and rivalries within the ninja world.
The discovery of the origin of the Ice Dragon Slayer powers in the context of the Fairy Tail world could be really exciting. Maybe there's a connection to some ancient magic in the Fairy Tail universe. Also, when the Naruto character starts to form deep bonds with certain Fairy Tail members, like Natsu or Lucy. Their interactions and how they grow together as friends or comrades is a great plot point.
In some fanfictions, there's an original character who is a master of both ice and lightning techniques. This character has a mysterious past and often clashes with the Ice Dragon Slayer at first but later becomes an ally. They bring a new dynamic to the story as they can combine their powers in unexpected ways. Another interesting character is a healer who has a special connection to the Ice Dragon Slayer. They can heal the slayer's wounds in a way that also enhances their ice powers, which is really cool. There's also a character who is a rogue ninja that has been studying the Ice Dragon Slayer from afar and has some devious plans related to their powers.
Obviously, Naruto himself is very popular as he is the main character of the original Naruto series. The White Dragon Slayer is also a central figure in these fanfictions. Sakura might also be a popular character as she could interact with the new elements brought in by the White Dragon Slayer. Kakashi could be involved too, perhaps mentoring the White Dragon Slayer in some ninja skills.
Perhaps in this fanfiction, Naruto is transported to a world where dragon slayers exist, and he has to prove himself among them. He might start as an outcast due to his different origin but then show his godlike powers and earn their respect. He could then use his newfound knowledge and powers to help both his original world and the new one he's in.
A really interesting plotline is when the Blue - Eyes White Dragon is used as a key to unlock some ancient power or mystery in the Naruto world. It could be that there is a long - forgotten temple or scroll that only the power of the Blue - Eyes can access. Naruto, being the curious and adventurous protagonist, embarks on a journey to find this place. Once there, he discovers secrets about the origin of chakra or a new form of jutsu that was lost in history, all because of the connection with the Blue - Eyes White Dragon.
One popular theme is Lucy's training to become a powerful dragon slayer. Writers often explore how she overcomes the difficulties in learning new skills. Another theme is her relationships with other characters. For instance, how her new status affects her friendship with Natsu.
Sasuke would be really interesting. He already has a dark and brooding nature. Adding Ice Devil Slayer powers would enhance his cool and aloof demeanor. He could use the ice powers in combination with his Sharingan and fire - based jutsu in really unique ways. For example, he could freeze the water created by a water - style jutsu and then shatter it with his ice powers.
One common theme is the power struggle. Gray often has to deal with his own powers as an ice dragon slayer and how to control them better. Another theme is friendship. He usually has comrades who support him in his battles.
One common theme is heroism. The main character, the ice dragon slayer hero, is often portrayed as brave and selfless in the face of danger. Another theme is the battle between good and evil, with the ice dragons usually representing the evil force.