If Naruto uses magic in fanfiction, it could completely change the power dynamics. For example, his normal jutsu might be replaced or enhanced by magic, making him even more powerful against his foes. It could also lead to new alliances as those who are interested in magic might seek him out.
In many of these fanfictions, Naruto uses magic to surprise his opponents. For example, he might use magic to teleport behind an enemy instead of using the normal ninja body - flicker technique. Magic gives him an unexpected advantage.
He could use elemental magic like fire, water, air, and earth magic. Since he already has an affinity for certain elements in the original Naruto series, it would be easy to translate that into magic forms. For example, his Rasengan could be transformed into a magic - infused attack.
One possible plot twist could be that the gun magic is actually a curse in disguise. Maybe it seems powerful at first, but it slowly starts to corrupt Fem Naruto, and she has to fight against its dark influence.
One could be 'Naruto's Magical Ascent'. In this fanfiction, Naruto discovers his magic abilities when he's constantly neglected by the village. He uses his newfound magic to prove his worth in unique ways, like creating illusions that are far more powerful than normal ninja jutsus. Another is 'Magic - Naruto's Hidden Power'. Here, Naruto's magic is tied to an ancient and forgotten art that he stumbles upon during his lonely times. It gives him an edge in battles and helps him gain the respect he always deserved.
Well, there are some out there. The idea of Naruto using dragon slayer magic is really cool. In these fanfictions, Naruto could potentially gain new powers and face different kinds of challenges. For example, he might use the dragon slayer magic to fight stronger enemies that his normal ninja skills couldn't handle. It's a great concept that allows for a lot of creativity in the fanfiction world.
Well, in fanfiction, the idea of Issei using Dragon Slayer magic can open up a whole new world of possibilities. It could make him even more powerful in battles against various foes. Maybe it gives him an edge in fighting dragons or other powerful magical creatures that he might encounter in the 'High School DxD' universe.
One of the best uses is for world - building. Magic can create unique landscapes, like floating islands in a sky realm. It also adds mystery. For example, in 'The Lord of the Rings', Gandalf's magic is used to fight the dark forces and protect the Fellowship. Another great use is character development. A character learning magic can show growth and struggle, as in 'Harry Potter' where Harry has to master different spells.
One common theme could be the struggle between good and evil within Lucy herself. Since she's using dark magic, she might have to grapple with the negative impacts it has on her moral compass.