Another plot idea is that there's a secret group within the Naruto universe that has been experimenting with Titan shifting, and Naruto accidentally gets involved. He then has to figure out how to control this new power while also dealing with the group that wants to use it for evil. Maybe he discovers that some of his friends are also unknowingly part of this experiment, and he has to save them.
One idea could be an OC who is a Titan Shifter with a unique ability like being able to control the elements while in Titan form. For example, they could create ice storms or fire blasts. Another could be an OC who has to struggle with the morality of being a Titan Shifter in a world where Titans are seen as pure evil. They might try to find a way to coexist with the other humans instead of just fighting Titans.
One unique plot idea could be that the OC has a special connection with the owl - dragon hybrid. Maybe it can communicate with it telepathically and they team up to uncover secrets about the Titans that no one else knows. For example, they might find out that the Titans are being controlled by an ancient force related to the owl - dragon's origin.
One idea could be to change Naruto's initial upbringing. For example, instead of being shunned in the village, he could be secretly trained by an unknown shinobi who has a different view on the Nine - Tails. This would change his skills and how he approaches challenges in the ninja world. Another idea is to restart the story from the Chunin Exams but with different opponents and rules. It could add a new layer of excitement and unpredictability.
Well, in Naruto Titan Shifter fanfiction, a cool concept might be the different types of Titans existing in the Naruto universe. For example, a Nine - Tailed Fox Titan that combines the power of the Nine - Tails from Naruto and the characteristics of a Titan. This could lead to some epic battles and power struggles within the story.
One idea could be that Naruto discovers a new and extremely powerful summoning scroll that allows him to call forth a god - like being from a forgotten realm. This being could teach Naruto a new form of chakra control that is far more advanced than what he has learned before.
Perhaps a fanfic where a crystal style user creates crystal clones that have different personalities and abilities. These clones could cause chaos in the village as they have a mind of their own. The main character then has to find a way to control them or face being exiled from the village. This would add an interesting dynamic as the character battles with their own power's unexpected side - effect.
A unique plot idea could be that Naruto's friends start to gain similar Saiyan - like powers. For example, Sasuke could develop a form that is a combination of his Sharingan and Saiyan power, which creates an interesting dynamic as they train together to master these new powers. Or perhaps, Naruto's Super Saiyan 3 form is the key to unlocking a long - forgotten prophecy in the ninja world that involves saving the entire universe from a cataclysmic event. In this way, the story could expand beyond the normal boundaries of the Naruto series.
A great plot idea could be centered around a moment in the history of the tailed beasts. For example, when the Sage of Six Paths first divided the chakra into the tailed beasts. It could show how the beasts were initially perceived by the world. Another idea is to look at a moment in the history of the Hidden Sand Village. Maybe during a time when they were at war with Konoha and the events that led to the peace treaties. You could also explore a moment in the history of the Sharingan, like how it was first discovered and developed within the Uchiha clan.
The plot could involve a conflict within the group of titan shifters because of the tenth titan. Some might see it as a threat, while others believe it's the solution to end the war. The tenth titan's power could be something that disrupts the balance between the different factions. For example, it could have the ability to nullify the powers of other titans, which would make it a highly sought - after and dangerous power.
It could be Orochimaru. He's always been interested in power and forbidden jutsu. In this fanfic, he might discover the power of Titan shifting and try to use it for his own gain. He could experiment on people to create more Titan shifters under his control, and Naruto would have to stop him from creating an army of these powerful beings.