Well, it could be a new character created specifically for the fanfiction. This character might have a special connection to the slayer bloodline and be on a journey to discover its true potential.
Well, Naruto is a must - have main character. He might be the one who unlocks the dragon slayer bloodline's true potential. Hinata could be another main character, her Byakugan ability might interact in interesting ways with the dragon slayer powers. There could also be a mysterious character who is an elder of the dragon slayer bloodline clan. This character could hold the key to understanding the bloodline's history and secrets, and thus be an important main character in the fanfiction.
One interesting concept could be the combination of Naruto's ninja abilities with the dragon slayer powers. For example, Naruto might use his shadow clones in unique ways when fighting alongside dragon slayer - like attacks. Another concept could be the origin of the dragon slayer bloodline in the Naruto universe. It could be tied to some ancient and forgotten clan. Also, the way the characters interact with dragons in this fanfiction can be really cool, like forming alliances or having epic battles against them.
One interesting plot idea could be the discovery of a new and extremely powerful bloodline within the Naruto universe in the 'naruto slayer bloodline fanfiction'. Maybe a character who was thought to be weak suddenly unlocks this bloodline and has to deal with the newfound power and the attention it brings.
There are also fanfictions where a bloodline is created through some sort of experimental jutsu. For example, a bloodline that allows the user to transform into different elements at will. This would give the character an edge in combat as they could adapt to any situation by changing their form.
Sure. Fanfiction writers often come up with the wildest crossovers, and 'Naruto is the Doom Slayer' is one of those really creative ideas. It might explore how Naruto's chakra powers could be used in a way similar to the Doom Slayer's abilities, or how his ninja - like agility and combat training would fare against the demons in the Doom universe. There could be all sorts of interesting plot twists and character interactions in such a fanfiction.
The knight bloodline could be integrated as a foreign power that was brought to the Naruto world long ago. Maybe a group of warriors from another dimension with the knight bloodline came and settled, and over time their bloodline got diluted but still resurfaces in certain individuals.
He might use some special jutsu or seals. For example, he could use a sealing technique to suppress the signs of his bloodline. This way, others wouldn't be able to detect it through normal means like sensing chakra.
It could also be part of a strategic move. By hiding his bloodline, he can surprise his opponents in battle. They would underestimate him based on not knowing about his true powers, and then he could turn the tables on them when the time is right. This gives him an edge in combat situations.
Well, one implication could be enhanced physical abilities. Dragons are often seen as strong and powerful creatures in many mythologies. So Naruto might have greater strength, speed, and endurance. He could also have some sort of elemental control related to dragons, like breathing fire or manipulating wind in a more dragon - like way. Maybe he could even fly in some forms, as dragons are known for their flight ability.