One interesting concept could be the exploration of rare and powerful bloodlines not fully explored in the original Naruto series. For example, a fanfiction might delve deeper into the powers of a particular clan's bloodline, like the Yuki clan's ice release, and show new and unique ways of using it in combat.
Often, characters who are hybrids of different bloodlines tend to be popular. For instance, a character who is part Uzumaki and part Senju could be really interesting as they would potentially have access to both the Uzumaki's life - force and sealing abilities, as well as the Senju's natural affinity for all types of ninjutsu.
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.
The Snakes, especially those related to Orochimaru's summons, are often used in fanfiction. They can bring an element of mystery and danger. Some fanfictions might explore the idea of a redeemed snake summon that helps Naruto in his quests, or a more powerful, ancient snake that was hidden away until now.
The use of legendary swords in Naruto fanfiction can also change the power dynamics between characters. A character who might not be as strong in the original series could become a formidable force with the aid of a powerful sword. Say, a side character gets hold of the Kubikiribocho and suddenly becomes a key player in battles, creating new and interesting storylines.
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.
In Naruto fanfiction, the concept of a bacteria bloodline can be really interesting. It could potentially give the character unique abilities. For example, they might be able to control bacteria for various purposes like healing or creating poisons. Some fanfictions may explore how a character with this bloodline is treated in the ninja world, whether they are feared or revered.
The Naruto creation bloodline fanfiction often explores the potential of genetic combinations. Some fanfictions might create a bloodline that has the power of both the Uchiha's Sharingan and the Hyuga's Byakugan. This could lead to a super powerful character with enhanced vision abilities and the potential to unlock new jutsus.