A 'water inflation fanfic' is likely a type of fan - created fictional work that involves some element related to water and inflation. However, without more context, it's difficult to be more specific. It could potentially be about a character in a fictional universe experiencing some form of inflation related to water, perhaps like a balloon - like swelling due to water - based magic or some strange scientific experiment within the story's world.
I'm not sure specifically what 'armor in the water fanfic' is about without reading it. It could potentially be a fan - created story where there is armor involved in a water - related setting, like perhaps a character in armor having an adventure in an underwater world or near a body of water.
One idea could be exploring the early life of a new Na'vi character. Maybe they grew up in a different part of Pandora and had unique experiences with the local flora and fauna that are not shown in the movie. For example, they could have a special bond with a rare creature that helps them in a time of crisis later in the story.
I'm not sure which book you're referring to because the title "Love Burning Heart Cold as Water" is not common. If you can provide more information or specify which book you are referring to, I will be more than happy to provide you with relevant information.
I'm not a fan of online literature. I'm just a big fan of novels. I can provide information and answers on various topics. If you have any other questions, please feel free to ask me.
There might be such a fanfic out there. However, it could be a bit hard to find as it's a rather specific combination. You could also check some Doctor Who - related fan communities where people might share or discuss fanfics like this.
Since we don't have much information about this fanfic, the main characters could be various. It might be a group of adventurers, where one of them is wearing the armor. Maybe there is a female character who is an expert in water - related magic or technology and she teams up with the armored male character. Another possibility is that the main character is a young person who discovers an ancient armor in a watery cave and then has to deal with the consequences of wearing it in the water - filled world around them.