I really like 'Eternal Connection'. In this fanfic, Madara and Itachi are brought together in a time - travel scenario. It's a really interesting concept as they both have to deal with the knowledge of the future and past while also developing their relationship. It's full of action and some really touching moments.
One popular theme is redemption. Many fanfics explore how Itachi, with his complex past of killing his own clan, can find redemption through his relationship with Madara. It gives a new perspective on his character.
There's also 'Itachi and Madara: The Unseen Alliance'. This fanfiction imagines a situation where Itachi and Madara form an alliance for a greater good, against some common enemies that the original Naruto series didn't explore. It's full of twists and turns and the character interactions are really engaging.
One popular 'itachi x sai fanfic' is 'The Unlikely Bond'. It explores their relationship in a unique way, with Sai gradually understanding Itachi's complex nature. Another great one could be 'Shadows and Colors' which focuses on how their different personalities interact and how they grow together in a fictional scenario.
I think a 'Genius Naruto x Itachi' fanfic can be really interesting. It could explore their different powers and how they might interact in new and unexpected ways. Maybe Naruto's unwavering determination and Itachi's complex motives could lead to some great character development and plot twists.
One great 'Naruto x Itachi fanfic' is 'The Unlikely Bond'. It delves into a scenario where Naruto and Itachi have to team up for a mission that could change the fate of the ninja world. The story is really engaging as it shows their different perspectives and how they gradually come to understand and respect each other.
I'd recommend 'The Unspoken Bond'. It does a wonderful job of delving into Itachi's character while also creating a believable connection with the reader. The story flows well and has some really touching moments.
I really like 'The Redemption of Itachi in Sasuke's Eyes'. This fanfic shows how Sasuke's perception of Itachi changes over time. It has some amazing character development and it also weaves in some great action scenes that are related to their relationship.
One characteristic is the exploration of their contrasting personalities. Anko is bold and impulsive while Itachi is calm and calculating. Fanfics often play on how these two different personalities interact and either clash or complement each other.