One plot idea could be a story where a young ninja discovers they have received Shisui's eyes through some mysterious means. They then have to learn to control the unique powers of the eyes, like the powerful genjutsu abilities. This could lead to them being hunted by those who want to use the eyes for evil purposes.
In a fanfiction, the story could revolve around a new character who is a distant relative of Shisui. This character awakens Shisui's eyes unexpectedly. They then struggle to fit into the ninja world with these powerful eyes. They face discrimination from other clans who fear the power of the Uchiha eyes. But in the end, they prove themselves to be a force for good by using the eyes to protect their village.
A possible plot could involve a time - travel scenario. A character goes back in time and meets Shisui. They end up inheriting his eyes in a way that changes the course of the Naruto universe. Maybe they prevent certain tragedies from happening, all because of the powers they gain from Shisui's eyes. For example, they could use the eyes to stop the Uchiha massacre.
Perhaps the fanfic could focus on a training arc. A young ninja, who is a big fan of Shisui, discovers a way to inherit or mimic the abilities of Shisui's eyes through some special training method. This training would be filled with difficulties and self - discovery. As they progress, they start to understand the true burden that comes with such power. They might also attract the attention of some of the village's elders or enemies, which would lead to various conflicts and adventures.
A plot could involve Sakura being targeted by an enemy who wants to use her medical knowledge for evil purposes. Shisui, being a skilled ninja, decides to protect her. As they go on the run together, they start to understand each other better. Shisui might teach Sakura some unique ninja techniques, and Sakura could help Shisui deal with his own emotional traumas. Another idea is that they both get involved in a mystery within the Hidden Leaf Village. There are strange disappearances, and they suspect that there is a powerful enemy at work. They have to use their combined skills, Sakura's intelligence and medical expertise and Shisui's combat and Sharingan abilities, to solve the mystery.
One plot idea could be that Shisui survives and he meets Sakura during a mission outside the village. He is intrigued by her medical skills and her strong will. They start to train together and a friendship forms that slowly turns into something more as they face various challenges together.
The plot might involve Naruto getting Shisui's eyes in a strange accident. With these eyes, he discovers a hidden conspiracy within the Hidden Leaf Village. There are some rogue ninjas who are planning to use a powerful jutsu that can only be countered with the unique abilities of Shisui's eyes. Naruto, with his new - found powers, has to team up with his friends like Sasuke and Sakura to expose the conspiracy and save the village. Along the way, he struggles with controlling the Sharingan's powers and the emotions that come with it.
One possible plot could be that Naruto gains Shisui's eyes through some mysterious ninja art. With these eyes, he could have enhanced perception abilities, like being able to see through genjutsu more easily. This would change his fighting style and make him even more formidable against opponents. He might also use the unique powers of Shisui's eyes to uncover hidden secrets in the ninja world, leading to new adventures and alliances.
One plot idea could be that Naruto's violet eyes are a sign of a hidden bloodline. This new bloodline gives him unique powers, like the ability to see chakra in a more detailed way. For example, he can detect different types of chakra from long distances, which helps him in battles and in finding enemies. Another idea is that the violet eyes are a result of a curse. As he tries to understand the origin of the curse, he uncovers dark secrets about his family or the village's past. Maybe he has to go on a journey to break the curse, facing many challenges along the way.
One plot idea could be that Itachi and Shisui are on a mission and they cross paths with Sakura. Shisui, being the friendly one, starts to teach Sakura some new jutsu skills. Itachi, initially reluctant, gradually warms up to Sakura's determination. Another could be a time - travel plot where Sakura goes back in time and meets a young Itachi and Shisui. She tries to prevent some of the tragedies that are to befall them in the future. And finally, a plot where Itachi and Shisui are in a life - or - death situation and Sakura, with her medical skills, has to save them and in the process, they form a strong bond.
Perhaps there is a plot where an ancient curse is affecting the Uchiha clan, and Itachi and Shisui suspect Sakura might have some knowledge or power that could help them break it. They then team up with her to find a solution, and along the way, they discover new aspects of each other's personalities and abilities.
One possible plot could be that Naruto discovers he has Shisui's eyes through some sort of ancient Uchiha ritual or curse that was unknowingly transferred to him. Mikoto could be the one who reveals the truth about his newfound powers. Then Naruto has to learn to control the Sharingan while also dealing with the Uchiha clan's secrets that Mikoto is aware of.
One plot idea could be that Naruto's mystic eyes allow him to see the true nature of chakra. He can detect hidden traps or illusions that are based on chakra manipulation more easily. For example, in a battle against a powerful enemy who is skilled in genjutsu, his mystic eyes would give him an edge as he can see through the false chakra constructs of the genjutsu and counterattack swiftly.