You could also ask in 'Adventure Time' - related Facebook groups. There are often fans in those groups who are into fanfiction and might be able to point you in the right direction. Additionally, following 'Adventure Time' fanfic writers on Twitter might lead you to their works, especially if they write about sick scenarios in the show.
Try searching on Tumblr. There are a lot of 'Adventure Time' fans on there who might post or recommend sick fanfics. You can use relevant hashtags like #AdventureTimeSickFanfic. Also, some Reddit communities dedicated to 'Adventure Time' might have discussions or links to such fanfics. For example, the r/adventuretime subreddit could be a good place to start looking.
You can start by searching on fanfiction websites such as Archive of Our Own. Just type in 'Adventure Time sick fanfiction' in the search bar and it should bring up relevant stories.
Another option is to check out Tumblr. There are often fanfic recs (recommendations) on Tumblr blogs dedicated to 'Adventure Time'. You can follow these blogs and see if they've recommended any Marceline fanfics. Plus, some Tumblr users also write their own fanfics and might share them on their blogs.
There are fanfics where the Lumpy Space Princess gets sick. Since she's so self - centered, it could be really funny to see how she demands everyone to take care of her. And in some sick fanfics, it's not just a physical illness. There could be a 'sickness' that affects the magic in the Land of Ooo. Finn and his friends then have to go on a quest to find a cure, which makes for an exciting adventure - filled fanfic.
You can start by looking on fanfic platforms like Wattpad or Archive of Our Own. Just type in 'Harry Styles sick fanfic' in the search bar and see what comes up.
Another place could be FanFiction.net. It has a large collection of fanfics from various fandoms. Just be sure to use the search bar and be specific with your search terms like 'Adventure Time' and 'weight gain' to narrow down the results and find what you're looking for.
Fanfiction.net also has some BTS sick fanfics. However, the interface might not be as user - friendly as AO3 or Wattpad. But if you're patient and search thoroughly, you can come across some interesting ones. Additionally, there are some smaller, BTS - dedicated fanfic websites where you can potentially find these types of stories.
Archive of Our Own (AO3) is also a great place to find 'Adventure Time Ice Queen' fanfics. The tagging system there is very useful. You can search for tags like 'Ice Queen', 'Adventure Time', and also filter by things like rating, word count, and genre to find the perfect fanfic for you.
Some common themes could be Marceline's struggle with her vampiric nature while being sick. It might show how her friends in the Adventure Time world try to take care of her. For example, Finn and Jake could be there to cheer her up or find a cure for her illness.
You can try Archive of Our Own (AO3). It has a large collection of BTS fanfics, including ones where JK is sick. The site is well - organized and easy to search.
You can try websites like Archive of Our Own (AO3). It has a large collection of fanfics, and you can search for 'BTS Jin Sick' specifically. There are often different tags and ratings to help you find the ones that suit you.