Love and friendship are also prevalent themes. Despite their differences and the initial hostilities between them, they might develop a deep friendship or even romantic feelings. This can add a whole new layer of complexity to the relationships in the Attack on Titan world. For instance, they could be the key to uniting different factions within the story that were previously at odds because of their relationship.
One popular fanfiction idea could be a story where Eren has to team up with the Female Titan against a new, more powerful enemy in the world of Attack on Titan. Maybe they start off as reluctant allies, but as they face challenges together, they begin to understand each other better and develop a unique bond.
A theme that often comes up is destiny. Fans like to write about how even as a baby, Eren is already on a path towards his future as a Titan - shifter and a hero. It's about how his early days might be subtly guiding him towards that fate. For example, he might show signs of great strength or determination even as a tiny baby. And also, protection is a theme. His family and those around him are trying to protect him from the harsh reality of the world outside the walls, which is a big part of many baby Eren fanfictions.
In 'attack on titan eren crossover fanfiction', a very common theme is the clash of worlds. When Eren crosses over, the two worlds, whether it's a magical world or a high - tech universe, collide. This leads to all sorts of chaos and interesting plot developments. The theme of redemption also shows up sometimes. If Eren has made mistakes in his own world, in the crossover world he may get a chance to make up for them. And of course, the theme of discovery is there. He discovers new abilities, new places, and new ways of thinking in these crossovers.
One possible fanfic plot could be that Eren has been planning this for a long time. He might gather intelligence about the Colossal Titan's weaknesses. Then, in a fierce battle, he manages to get close enough to deliver a fatal blow. This could be a very emotional moment for him as well, considering the history between them.
One common theme is the exploration of the blurry line between friend and foe. Since the Female Titan is initially an enemy, fanfictions often delve into whether she can become an ally through her interactions with Armin. For example, Armin might try to convince her to side with the humans.
One common theme is redemption. Since Annie has done some not - so - good things in the original story, fanfictions often explore how her relationship with Eren could lead to her redemption. Another theme is forbidden love, as they are on different sides in the main plot. And of course, there's the theme of mutual understanding, as they both have their own secrets and traumas that they could share with each other in these fictional stories.
The theme of changing the fate of the world also appears frequently. Given their powers and positions in the 'Attack on Titan' story, fan fictions sometimes explore how Eren and Annie could work together to change the doomed fate of their world, whether it's by fighting against the Titans in a different way or finding a solution to the overarching conflict.
A prevalent theme is protection. Eren is usually depicted as the protector of his harem, and in return, they offer him emotional support. Also, the theme of growth is common. As the story progresses, both Eren and the members of his harem grow as characters. They learn from their experiences together, and their relationships also evolve. For instance, they might start off as just friends or comrades and then develop deeper romantic feelings. There's also the theme of sacrifice, where sometimes a member of the harem might be willing to sacrifice themselves for Eren's sake or for the sake of the group.
One common theme is self - discovery. The OC often goes through a journey of finding out who they are, and Eren plays a role in that. For example, they might discover new powers or aspects of their personality through their interactions with Eren.
One common theme is trust. Given their different personalities and positions in the 'Attack on Titan' world, a lot of fanfics focus on how they learn to trust each other. For example, Levi is often seen as the strict and experienced leader, while Eren is the hot - headed newbie with a special power. Their journey to trust is often central.