It's fairly common. Fans often look for more content related to their favorite shows. Since 'Attack on Titan' has a large and passionate fan base, there are a lot of fanfics available. 'Aot' fans might watch (read) these fanfics to explore different scenarios that the official story didn't cover. For example, they might want to see how a certain character would react in a different situation or what would happen if a major plot event had a different outcome.
The key elements in Ymir's back story include her emergence from the primordial state, which was a time of nothingness and potential. Her physical body being the raw material for the creation of the world, like the sky, the earth, and the seas. And finally, the act of the gods overpowering her, which is a significant part of the power dynamic in Norse mythology.
Their relationship can also be seen as a form of mutual dependence. Christa, on the other hand, gives Ymir a sense of purpose. She is like a light in Ymir's somewhat dark world. Through their interactions, we can explore themes like loyalty, self - discovery, and the power of friendship in the context of the 'Attack on Titan' universe.
The ending of the AOT manga was quite controversial among fans. Some were satisfied, while others felt it was rushed or left many questions unanswered.
There could be various fanfictions. Maybe some that focus on alternative endings, like ones where certain characters survive who didn't in the original. For example, a fanfiction where Erwin survives and leads the Scouts in a different way.
Ymir was the first Titan. She was a slave in the Eldian Empire. One day, she came across a strange tree and entered a body of water there. She then merged with a spine - like organism and became the first Titan. This power was later used by the Eldians to gain dominance. But Ymir was also exploited and used for centuries.
The key element is her encounter with the tree and the spine - like thing which made her the first Titan. Another is her status as a slave which led to her being used by others for her new - found power.
It could mean that a person who is a fan of 'Attack on Titan' (AOT) is reading or watching fan - created fictional works related to AOT. Maybe they are interested in seeing different interpretations or storylines that fans have come up with.
One way is to check on popular fanfiction websites. Look for ones with high ratings and a lot of reviews. For example, Archive of Our Own (AO3) has a large collection of AOT fanfictions. You can search for the most popular ones there.