Redemption is often seen. Maybe a character who was once on the wrong path gets Shisui's eyes and sees it as a chance to make up for their past mistakes. They use the power of the eyes to protect those they once hurt or to fight against the forces of evil that they were once a part of.
Another common theme is sacrifice. Shisui was willing to sacrifice himself for the greater good. Fanfictions expand on this, perhaps showing alternative sacrifices he could have made or the consequences of his sacrifice in more detail. They might also explore how other characters react to his selfless act.
Another theme is sacrifice. Given their fates in the original Naruto story, fanfictions often play with the idea of how much they were willing to sacrifice for their village, their clan, and for each other. For example, Shisui's sacrifice and how it affected Itachi.
Common themes in Shisui Uchiha fanfiction include friendship. Despite the Uchiha's complex situation, fanfictions sometimes show him forming deep friendships outside or within the clan. Another is the theme of legacy. His actions in the original story left a certain legacy, and fanfictions often explore how that legacy could have been different or how it affects the future. And the theme of love, not just romantic love but also love for his clan and friends, is often explored in different ways in these fan - created stories.
Well, he might gain the power of Shisui's Sharingan abilities. Naruto could potentially use Shisui's powerful genjutsu skills. It would make him even more formidable in battles against tough opponents like the Akatsuki members.
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.
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.
The mystery surrounding the eyes is also appealing. In the Naruto universe, there are always secrets. With Shisui's eyes, there could be secrets about their origin or even some hidden powers that were not fully explored in the original series. A fanfic could dig into these mysteries. Also, the psychological impact on the character who has the eyes is important. These eyes are a great power, and with great power comes great responsibility. How does the character deal with the pressure? Do they become paranoid or do they rise to the occasion? This can be a great area to explore in the fanfic.
One common theme is identity. Since he's in a different world or with different characters, Shisui often has to re - evaluate who he is. For example, in crossovers with modern settings, he might question his ninja values in a world without the same kind of warfare.
Another theme is sacrifice. Given their fates in the original story, fanfictions often play around with the idea of how much they are willing to sacrifice for each other and for the greater good. It could be sacrificing their own lives or their own happiness for the other.
One common theme is redemption. Since Shisui often has regrets in the original story, in time travel fics, he tries to make up for his past mistakes or the mistakes of others. For example, preventing the Uchiha massacre.