One interesting plotline could be a character with the Reaper Bloodline having to hide their power from the main Naruto characters at first. Maybe they're afraid of being hunted or experimented on because of their unique bloodline.
A cool plotline might involve the Reaper Bloodline user developing a new jutsu that combines the death - like abilities of the bloodline with traditional ninja techniques. For example, they could create a jutsu that not only inflicts physical damage but also drains the opponent's life force, similar to how a reaper takes souls. This would make them a formidable opponent in battles and could lead to some intense showdowns against powerful villains in the Naruto universe.
Perhaps a plot where Naruto makes a deal with the Death Reaper to save his friends. He has to go on a dangerous quest in the afterlife or something like that. It could involve facing his own fears and the dark secrets of the ninja world.
A possible plotline is that Naruto's godlike bloodline makes him a target. Various ninja clans, both from his own village and from other lands, become jealous or fearful of his power. So, he has to deal with political intrigue and assassination attempts while also trying to prove that he means no harm and only wants to use his powers for the good of all ninja.
Another plotline could involve a character with the Furyan Bloodline being ostracized because others fear their power. This could lead to a journey of self - discovery and the character finding a group that accepts them for who they are. They could then use their powers to protect this newfound family and fight against the discrimination in the ninja world.
Perhaps a plotline where the character with the godlike multi - bloodline has to hide their true nature from others in the Naruto world. This could create a lot of tension and mystery as they constantly have to be on guard not to reveal their secret, while also trying to use their powers subtly to help their friends and the village.
A possible plotline is the discovery of an ancient prophecy related to the fallen angel bloodline in the Naruto universe. This could lead to a race among different factions to either protect or use the power of the character with this bloodline. The character might have to fight against those who want to exploit their power for evil purposes while also struggling with their own identity.
One possible plotline could be that Naruto's rare bloodline gives him unique powers that make him stand out even more in the ninja world. For example, it might grant him the ability to control an element that no one has seen before, like a combination of lightning and water in a completely new form. This would change the way battles are fought and how his comrades view him.
Well, in this kind of fanfiction, a plotline could involve Naruto's ancient bloodline leading to him having an unexpected mentor. This mentor could be someone from an ancient clan who recognizes the potential in Naruto's bloodline and decides to train him in a special way. Also, his bloodline might give him the ability to communicate with ancient spirits or entities. This could lead to him getting help or knowledge from these otherworldly beings that give him an edge in battles or in solving the mysteries of the ninja world.
One possible plotline could be Naruto using his gun bloodline ability in a new and unexpected way during a battle. For example, he might be able to combine his chakra with the gun's power to create unique attacks.
One exciting plotline could be a character with a rare and powerful bloodline suddenly awakening it fully during a crucial battle. For example, a character from a minor clan discovers that their bloodline has the ability to manipulate time on a small scale, which gives them an edge against a powerful enemy. Another could be the combination of different bloodlines through some sort of scientific experiment gone wrong or right, creating a new and unique power. And then there's the idea of a bloodline that has been suppressed for generations suddenly emerging and changing the power dynamics in the Naruto universe.
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.