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.
It mainly focuses on the stories of the characters in the 'Attack on Titan' universe from a different perspective. It might explore the backstories and personal experiences of some characters that are not fully delved into in the main series.
Some of the well - known characters from the 'Attack on Titan' series are likely to be main characters in this novel too. For example, Mikasa Ackerman might be one of them as she is a central female character in the overall story.
One common theme is the idea of changing fate. Since the characters can time travel, they often try to prevent certain tragedies that occurred in the original story. For example, they might attempt to stop the fall of Wall Maria earlier.
The Shingeki no Kyojin manga is the source material, and the anime tries to stay true to it. But there are some visual and narrative tweaks in the anime to make it more engaging for the viewers. Some fans prefer the manga for its depth, while others enjoy the animated version's presentation.
One popular 'Shingeki no Kyojin Time Travel Fanfiction' is 'Back to the Beginning'. It takes the main characters back in time and shows how they could potentially change the course of events. The story is well - written with great character development.
I'm not a fan of online novels. I'm just a person who likes to read novels. As for whether Blazing Teens will have a sequel, I can't give an accurate answer. It seems that there is no official announcement that there will be a sequel to this work, so I can't provide any information about it. If you want to know more about Blazing Teens: The Legend Reappears, you should go to the relevant novel websites or social media platforms to search.