Itachi Uchiha is also extremely popular. His tragic backstory and his powerful use of the Sharingan make him a prime candidate for fanfic exploration. Writers might create stories that expand on his time in the Akatsuki or his relationship with Sasuke before his death.
Sasuke is often a popular character in such fanfics. Given his original Sharingan abilities, fans like to explore how he would adapt to having the Tenseigan and Rinnegan as well. His character arc of seeking power and redemption can be further expanded with these new powers.
One interesting fanfic could be about a character who unexpectedly awakens the Sharingan in a non - Uchiha way. Maybe a young ninja from a different clan has a near - death experience during a battle against powerful enemies and suddenly their eyes change to Sharingan, granting them new powers and a connection to the Uchiha legacy.
There could also be original characters created specifically for this fanfic. These new characters might have their own motives related to the Sharingan. For example, a new character could be a researcher who is trying to unlock the ultimate power of the Sharingan and sees Naruto as a key subject. They could add a whole new dynamic to the story.
Often, characters from the original Naruto series who are associated with the sharingan are popular in 'blue sharingan fanfic'. For example, Sasuke. Writers might give him a blue sharingan in fanfic and explore new storylines for him, like him using the blue sharingan to achieve a new level of power.
Itachi also features prominently. His powerful Sharingan and his complex character make him a favorite for fanfiction writers. They might write about his past and how his Sharingan abilities influenced his actions in ways not fully explored in the original series.
I'm not sure exactly as it's a fanfic, but likely there will be a character inspired by Naruto. There might also be characters related to the Sharingan's origin or those who are affected by the power of the 'holy' Sharingan.
It could be Sasuke. Since the fanfic has 'Sharingan' in the title, Sasuke, who is well - known for his Sharingan abilities in the original Naruto series, might be one of the main characters.
Another possibility is that it could involve Naruto as a main character even though he doesn't have the Sharingan. His relationship with the character having the Eternal Sharingan could be explored. Maybe Naruto helps the character come to terms with their power or they team up to face a common enemy. This would add an interesting dynamic to the fanfic as Naruto's ideals and the power of the Eternal Sharingan collide and combine in different ways.
There could be a young and ambitious ninja as the main character in 'naruto sharingan god fanfic'. This ninja starts out as an underdog but with the discovery of the Sharingan God, their life changes completely. There might also be a mentor - like figure, perhaps an old and wise ninja who has some knowledge about the Sharingan God and helps the main character on their journey. Additionally, there could be antagonists, like other power - hungry ninjas who want the Sharingan God power for themselves.
One popular theme is the evolution of the Sharingan. Fanfics often explore how characters can take the Sharingan to new levels, like unlocking different forms or abilities. Another theme is the connection between the Sharingan and the characters' emotions. For example, how love or hatred can influence the power of the Sharingan.