A more complex fanfiction could involve the idea that the Sharingan and Susanoo are not just ninja abilities but are actually connected to an ancient alien race. Naruto and his friends find out about this connection and have to travel to different dimensions to find out more. Along the way, they encounter different forms of the Sharingan and Susanoo that are far more powerful than what they've seen in their own world. They must learn to adapt and use these new forms to save their world from an impending doom.
Well, a simple fanfiction could be about a young ninja who discovers a secret scroll that unlocks an advanced form of the Sharingan and Susanoo. He then uses these powers to protect his village from a group of rogue ninjas. He quickly becomes a hero in the village but also has to deal with the jealousy of some of the other ninjas who don't have such powerful abilities.
Imagine a fanfiction where a female ninja has the Sharingan and Susanoo, which is extremely rare for women in the Naruto universe. She is discriminated against at first because of this. But she rises above the prejudice and uses her powers to prove that gender doesn't matter when it comes to being a powerful ninja. She could form an all - female ninja team and they use their combined Sharingan and Susanoo powers to take on male - dominated ninja clans and show that they are just as strong, if not stronger.
A great fanfiction concept might be that Naruto somehow gains the Sharingan and Susanoo abilities. Maybe through some sort of experimental jutsu gone wrong (but in a good way). He then has to learn to control these new powers while still maintaining his own Sage Mode and Nine - Tails chakra. It would be interesting to see how he combines these different power sources to fight against new and old enemies.
There's a really interesting fanfiction that focuses on a female character getting the Mangekyou Sharingan and Susanoo. It's unique because it delves into how a female ninja copes with the power that is usually associated with male Uchiha characters. It shows her struggles, her triumphs, and how she changes the perception of these powers in the Naruto universe.
The abilities might be different too. Since Naruto has his own set of skills like the Rasengan and Sage Mode, his Susanoo could incorporate those elements. For example, his Susanoo's hands could form giant Rasengan - like attacks, or it could have the ability to enter Sage Mode, which would be a huge departure from the regular Uchiha Susanoo's abilities.
There could be a fanfiction where a villain has mastered both the Mangekyou Sharingan and Susanoo in a way that no one has seen before. This forces the heroes to find new ways to combat this powerful foe, perhaps by delving into ancient jutsu that can counteract these abilities. It would be full of intense battles and strategic planning.
Well, it could have the ability to time - travel. Imagine Naruto using it to go back in time to prevent some of the great tragedies in the Naruto world, like the Uchiha massacre. This would change the whole storyline in a very interesting way.
In fanfiction, the Perfect Susanoo is usually much larger and more powerful than the normal Susanoo. It might have additional limbs or weapons that the normal one doesn't have. For example, it could have extra arms to hold more weapons or perform multiple attacks simultaneously.
It would enhance their visual perception. They would be able to see things in slow - motion, which is great for combat, allowing them to dodge attacks more easily.
Well, in many fanfictions, Naruto might first awaken Susanoo during a really intense battle. Maybe he's pushed to his limits while fighting a super - strong enemy, and his latent Uchiha blood (if that's part of the fanfic's premise) gets activated, leading to the awakening of Susanoo.
In a fanfiction, Naruto's Sharingan might allow him to copy some of the techniques related to Azula's firebending. For example, if he sees how she manipulates the shape and intensity of her flames, he could try to replicate it with his own chakra - based attacks. Azula could use her firebending to create distractions, making it difficult for Naruto to fully utilize the Sharingan's abilities. Also, the Sharingan could detect any hidden weaknesses in Azula's firebending stance or attacks, which Naruto could then exploit.
Well, Naruto's abilities would change drastically. The Sharingan gives the user enhanced perception, which would make Naruto even more formidable in combat. He could potentially predict his opponents' moves better. Also, with the Sharingan's ability to copy jutsu, Naruto might be able to learn and use new techniques more quickly. However, he would also have to deal with the potential negative effects of the Sharingan, like overusing it and straining his eyes.