One common theme is changing the past. In these fanfictions, Tris might go back in time to prevent a tragic event from happening in her story. Another theme could be exploring different timelines. For example, she could end up in a timeline where the rules or relationships in her world are completely different.
Often, you'll see the theme of self - discovery. When Tris travels through time, she gets to see different versions of herself and learn more about who she really is. There's also the theme of love across time. Maybe she meets someone in a different time period and a unique love story unfolds. It's all about exploring different aspects of the character and the world she comes from in new and exciting ways.
Trust is a big theme. Since they start off on rather rocky terms, fanfictions often focus on how they build or break trust. Also, the theme of self - discovery is common. As they interact more, both Peter and Tris learn more about themselves and their capabilities.
One common theme is the exploration of their relationship dynamics. Since they have a complex relationship in the original work, fanfictions often dig deeper into how they interact, whether it's as friends, rivals or something more.
One common theme could be power struggle. Given their characters, there might be stories exploring who has more power between them.
Love is a very common theme. Their relationship is often explored in more depth, showing their devotion and the challenges they face as a couple.
Another theme could be the idea of forbidden love. If there are certain circumstances in the original story that make their relationship difficult or against the rules, this can be a popular theme in the fanfiction. Writers can then explore how they deal with this forbidden aspect, like sneaking around or fighting against the system for their love.
One common theme is the expression of forbidden love. Since they are in a complex situation in the original story, fanfictions often play with the idea of their kisses being something they have to hide or are against the rules.
Survival is also a theme. In a world where factions are at odds and there are threats everywhere, Tris and Four have to survive. Fanfictions often explore how they rely on each other to stay alive and how their relationship evolves in the face of survival challenges.
Another common theme is family. In these fanfictions, they might be thinking about starting a family or dealing with the extended family in their society. It shows how their marriage affects not just them but also the people around them.
Adventure is also a theme. They might be on some sort of journey together in the fanfiction, facing challenges side by side which in turn strengthens their bond. For example, they could be on a quest to save their world or a particular group of people. And this adventure also gives them the opportunity to explore their feelings for each other more deeply.
A theme that can't be ignored is the transformation. Sometimes Tris undergoes a transformation, either physically or in terms of her understanding of the world. It could be that she becomes more like a vampire or gains a new perspective on life. And the overarching theme of good vs. evil, with Eric and Tris often on the side of good, fighting against the more malevolent vampires or entities in the fanfiction.