Imagine that the Akatsuki somehow gets involved with the Titans. They see the Titans as powerful weapons or something to be experimented on. Naruto and his friends suspect this and follow the Akatsuki through a strange rift which leads them to the world of Shingeki no Kyojin. There, they meet the characters from the other series. Together, they have to stop the Akatsuki's evil plan which involves using the Titans to take over both worlds. The Scouts are initially suspicious of Naruto and his powers but soon come to respect him as they see his skills in action.
One possible plot could be that the ninjas from Naruto are transported to the world of Shingeki no Kyojin. Naruto and his friends could use their ninja skills to help the Scouts fight the Titans. For example, Naruto's Shadow Clone Jutsu could be used to create distractions while the Scouts attack. Sasuke could use his Sharingan to predict the Titans' movements. And Sakura could use her superhuman strength to take on the Titans directly.
One interesting concept could be the combination of the unique power systems from both 'Shingeki no Kyojin' and 'Naruto'. For example, how the Titans' abilities might interact with ninja jutsus. Maybe the Survey Corps could use some Naruto - style stealth techniques to approach Titans more effectively. Another concept could be the character crossovers, like Eren Jaeger learning from Naruto about the power of friendship and how it can influence one's will to fight.
There's also 'Beyond the Walls'. This fanfic focuses on the relationships between the characters as they venture outside the walls. It shows how they grow and adapt to new situations, and it has some really heart - warming moments that fans of the original series will surely appreciate.
The exploration of the Titans' origin in a more detailed way is another common theme. Fanfic authors often come up with their own theories and stories about how the Titans were created and what their true purpose might be, adding new layers of mystery to the 'Shingeki no Kyojin' world.
Well, one special thing about the Shingeki no Kyojin fanfic is that it can delve deeper into characters' backstories that weren't fully explored in the original. It also sometimes presents alternative plotlines that can be quite exciting and unexpected.
Love and sacrifice is also a significant theme. In some fanfics, their love for each other is so strong that they are willing to sacrifice themselves for the other. This shows the depth of their relationship and how much they value each other in the dangerous world of 'Shingeki no Kyojin'.
For me, Hinata and Historia would be a great pairing. Hinata is shy but has a lot of inner strength, and Historia has had to find her own strength in a difficult world. They could share their stories of growth and self - discovery. And then there's Gaara and Reiner. Gaara was once an outcast but found his place, while Reiner is dealing with his own identity issues. They could have some deep conversations about their pasts and how they overcame their inner demons while also fighting side by side against common threats.
In some fanfics, the themes of both series are blended. 'Shingeki no Kyojin' is about survival against overwhelming odds, and 'Naruto' is about achieving dreams and facing one's past. A fanfic could explore how the characters from both series deal with each other's problems. For instance, how would the ninjas of Naruto react to the despair and hopelessness that often fills the 'Shingeki no Kyojin' world? And how would the 'Shingeki no Kyojin' characters be inspired by Naruto's never - give - up attitude?
It could be about the characters in 'Shingeki no Kyojin' having the ability to read the future. Maybe Eren or other Scouts somehow gain this power and it changes the course of the story. They might use this power to prevent disasters or to outwit their enemies like the Titans.
The Shingeki no Kyojin manga has finished. It was a highly anticipated and discussed ending, leaving fans with a lot to reflect on and discuss.