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.
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.
A vivid description can also make a great novel opening. Such as 'The sun blazed down on the dusty town, the heat rising in shimmering waves from the cracked streets. The saloon doors swung open, and a figure emerged, his face hidden beneath a wide - brimmed hat.' This type of opening sets the scene and makes the reader curious about what will happen next. It gives a sense of place and a hint of mystery.
Beginning with a vivid description can be great. Like in 'The Great Gatsby' where it starts with 'In my younger and more vulnerable years my father gave me some advice that I've been turning over in my mind ever since.' It gives a sense of the narrator's voice and draws you into their world.
One of the best openings is from 'Pride and Prejudice' by Jane Austen: 'It is a truth universally acknowledged, that a single man in possession of a good fortune, must be in want of a wife.' This line immediately sets the tone for the story which is centered around marriage and social status in 19th - century England.
One great opening is to start with a thought - provoking question. For example, 'Have you ever wondered what it would be like to live in a world without colors?' This immediately grabs the reader's attention and makes them curious to find out more. It sets the tone for a story that could be about a world where something fundamental has been altered.
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.