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.
I'm not sure specifically as there could be many works with this title. It might be about the process of thawing in a scientific or post - apocalyptic context, like the thawing of frozen landscapes or beings.
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.
Another theme is growth. The characters usually grow both personally and in their relationships as love thaws their coldness or hardness. They learn to be more open, understanding, and empathetic. This growth can be emotional, mental, or even spiritual in some cases. For example, a character might start off as very self - centered but through the power of love, they begin to care about others more and develop a stronger sense of community. Also, forgiveness is often a theme. Characters forgive each other's wrongdoings because of love, which is a very powerful and moving aspect of these fanfics.
One possibility could be that Batman somehow ends up in the Frozen universe where there is an ice thaw. Maybe he uses his detective skills to figure out the cause, like if it's due to some dark magic gone wrong or a new villain's plot. He could team up with Elsa and Anna to stop whatever is causing the abnormal thaw and save the kingdom.
Since I don't know the specific 'the thaw science fiction' work, I can't say for sure. But it could be scientists who are studying the thawing process.
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.
Love for the fandom can also thaw frozen fanfiction. If a writer is part of a passionate and supportive fandom, the positive energy from the community can reignite their love for their own fanfiction. They might get inspired by discussions, fan art, or other fanfictions within the fandom. Also, if they love the idea of contributing to the overall body of work in the fandom, it can give them the push to unfreeze their own piece.
Fanfiction.net is also a good place to look. There are a lot of different fanfictions on there. Search for 'love will thaw' and you might find some interesting reads. However, the quality can vary, so you may need to skim through a few to find the good ones.