A possible plotline could be that Naruto's dragon blood has a healing factor. In the heat of battle, instead of just relying on normal medical ninjutsu, his dragon blood could start to heal his wounds rapidly. This would make him even more of a formidable opponent as he could sustain more damage and keep fighting. It could also lead to some interesting moral dilemmas, like if he should share this power to heal others or keep it to himself to maintain his edge in combat.
One interesting plotline could be Naruto's newfound dragon blood gives him the ability to breathe fire. This would completely change the way he battles, adding a new and powerful offensive skill. He could use it to surprise opponents and also in combination with his shadow clone jutsu, like having clones surround an enemy and then all breathe fire at once.
Another plotline might involve Naruto's connection to the dragon world through his blood. Maybe there are other dragon - blooded beings out there who seek him out. Some could be friendly and want to train him to master his dragon powers, while others might see him as a threat and try to eliminate him. This would introduce new characters and conflicts into the Naruto universe.
One possible plotline could be Naruto forming a unique bond with Chomei. Maybe Chomei helps Naruto in a difficult battle by using its special abilities, like its ability to manipulate the nano - sized insects. This could give Naruto an edge against a powerful enemy.
One possible plotline could be a character who discovers a hidden power related to dragon's blood within the Naruto universe. This power might give them unique abilities like enhanced strength or the ability to control certain elements in a new way. Maybe it also comes with a curse that they have to overcome.
One possible plotline could be Naruto unlocking the Mangekyo Sharingan through some strange and unforeseen means, perhaps a powerful jutsu backfires and gives him this new power. Then he has to struggle with controlling it while his friends are both amazed and a bit worried about this new development in him.
One possible plotline could be Naruto using the EMS and Rinnegan powers to finally bring true peace to the ninja world. He might use the enhanced visual abilities of the EMS and the god - like powers of the Rinnegan to defeat a new, extremely powerful enemy that no one else could handle.
One possible plotline could be Naruto's overprotective behavior towards his sister in the fanfiction. He might get into fights with anyone he perceives as a threat to her. For example, if a boy shows interest in his sister, Naruto could go all out to intimidate the poor guy, creating some comical and tense situations.
One possible plotline could be Naruto struggling to control the power of the Alpha Stigma. He might initially be feared by his friends in Konoha because of its unknown nature. Another could be that enemies are attracted to the power of the Alpha Stigma within Naruto, leading to new and powerful adversaries coming after him. Maybe he has to go on a journey to learn more about the origin of the Alpha Stigma to fully master it and use it for good.
Another plotline could involve the adopted sister coming from a different village and having a hard time adjusting to life in Konoha. Naruto, having been an outcast himself, can relate to her struggles. He shows her around, introduces her to his friends, and they gradually form a strong bond as she starts to feel at home.
In a fanfic, Naruto could inherit the Sharingan from a long - lost relative. This relative could be an Uchiha who fell in love with an Uzumaki long ago. With the Sharingan, Naruto gains the ability to predict his opponents' moves more accurately. He uses this new power in combination with his Rasengan to create new and powerful jutsus, and he also has to figure out how to control the Sharingan's curse, which comes with its own set of challenges.
One possible plotline could be the Naruto character obtaining dragon god powers and how it changes his relationships. For example, his friends might be in awe or a bit scared at first. Another could be Naruto using these new powers to face tougher enemies like a new and more powerful Akatsuki group.
One interesting plotline could be the discovery of the dragon egg. Maybe Naruto stumbles upon it during one of his adventures. The egg might have special powers that attract the attention of various villains in the Naruto universe, leading to a series of battles to protect it.