Some popular themes include the exploration of their brotherly bond at a younger age. It could be about Sasuke looking up to Itachi in a more innocent time before all the tragedy. Another theme might be their training together, with Sasuke eager to learn from his older brother. Also, the family dynamic within the Uchiha clan when they were younger can be a focus, like how Itachi's actions even then were subtly influenced by the clan's expectations.
One common theme is the idea of protection. Younger Itachi protecting Sasuke from the harsher aspects of the Uchiha world. It could also involve Sasuke's admiration for Itachi's skills, and how that admiration turns into a driving force for Sasuke to improve himself. Additionally, there could be themes centered around the secrets that Itachi was already starting to keep from Sasuke at a young age, which later play a huge role in their relationship.
One popular theme is redemption. Given Itachi's complex past and his actions towards Sasuke, many fanfictions explore his journey to redeem himself in Sasuke's eyes. This could involve him protecting Sasuke from new threats or trying to make amends for the lies he told.
One of the most popular themes is the exploration of their complex relationship. Fans often write about how they could have reconciled in an alternate universe. Another theme is power - how their combined powers could be used against a common enemy. And family loyalty is also a big one, delving into how their family ties influenced their actions and how that could be different in a fan - made scenario.
Maybe Itachi gets sick. Then Sasuke has to take care of him, getting medicine and staying by his bedside. He'd worry about Itachi's health and do everything he can to make him better.
One common theme could be the exploration of Sasuke's emotional turmoil. Since Itachi is abusing him in this fanfiction, Sasuke might be shown as confused, angry, and deeply hurt. Another theme could be the power dynamic between them. Itachi being the abuser might have a significant amount of power over Sasuke, which could lead to themes of helplessness on Sasuke's part. Also, themes of revenge might be present. Sasuke might be constantly thinking about getting back at Itachi for the abuse, which could drive the plot forward in the fanfiction.
The popularity of 'Sasuke and Itachi Fanfiction' lies in the complexity of their relationship. They are brothers with a tragic past. Fans are drawn to the idea of exploring different scenarios for them, like what if they could have reconciled earlier or if their fates were different.
One common theme is redemption. Sasuke often sees Itachi in a new light and this helps him find a path towards redemption. He realizes that Itachi was not the monster he once thought and his love for Itachi becomes a part of his journey to make amends for his past actions.
One common theme is revenge. Sasuke's thirst for revenge against Itachi is often explored in great detail. Also, friendship, especially Naruto's friendship with Sasuke, is a big theme. Naruto's attempts to bring Sasuke back from the path of vengeance. Another theme is sacrifice, as Itachi's self - sacrificing actions for the greater good are often a central part of the stories.
One common theme is brotherly love. Itachi's love for Sasuke despite the hardships they face is often explored. For example, in many fanfictions, Itachi sacrifices a lot to protect Sasuke.
One common theme is the struggle against family and clan expectations. In the Naruto universe, the Uchiha clan has a strict code. Sasuke being in love with Itachi goes against the normal family dynamic. Another theme is self - discovery. Sasuke has to come to terms with his feelings which are not only unorthodox but also might make him question his identity.
There is a fanfiction called 'Eternal Ties'. In this story, the author beautifully portrays how Sasuke and Itachi's relationship evolves from a place of misunderstanding to a deep, loving bond. It shows their interactions in different scenarios, like when they are training together or facing a common enemy. Also, 'Hidden Affections' is a great one that shows the hidden, tender feelings they have for each other in a very engaging way.