One common theme is loneliness. Fluttershy is often portrayed as a shy pony, so it's easy to write about her feeling alone, even among her friends. Another theme is self - doubt. She might question her abilities, like whether she's a good enough friend or caretaker.
Another theme is self - discovery. Rarity is known for her love of fashion and Fluttershy for her kindness towards animals. In some fanfics, they encourage each other to explore new aspects of themselves. For instance, Fluttershy might become more assertive with Rarity's support, and Rarity might learn to be more in tune with nature like Fluttershy. This theme often ties in with their friendship as they grow together.
Another common theme is adventure. Fanfics often send them on exciting adventures, whether it's exploring a new part of Equestria or going on a quest to find a magical item. Their different skills and personalities, like Rainbow Dash's speed and Fluttershy's ability with animals, play important roles in these adventures. They might also learn something new about each other during the adventure, strengthening their bond.
Another common theme is adventure. They often go on adventures together, whether it's exploring a new part of Equestria or helping a lost animal. This allows for a lot of character development as they face different challenges during their adventures. For instance, Fluttershy might have to be brave in a spooky place, while Pinkie Pie learns to be more patient.
Well, there's a fanfic where Fluttershy loses her beloved animal friends for a while. It's really sad as she tries desperately to find them. I don't remember the exact title but it's something like 'Fluttershy's Lost Friends'. Also, some fanfics explore when Fluttershy is bullied by other ponies in a very subtle way, and that makes her extremely sad.
The theme of loss can be quite prominent in these fanfics. Spike could lose a friendship or a special object that was important to him. This loss makes him sad and forces him to deal with his emotions. Another common theme is the struggle for acceptance. Spike tries to fit in with the ponies' world, but there are always barriers, whether it's physical differences or differences in how they do things. These themes all contribute to the overall 'sad' tone of the fanfics.
One common theme is failure. Rainbow Dash is often portrayed as a very confident and capable pony. So when she fails at something, like a race or a mission, it can lead to a lot of sadness. For example, she might train really hard for a big event and then not perform as expected.
One common theme could be the idea of Fluttershy's friends supporting her during this new phase in her life. Another might be how Fluttershy adapts to the changes that come with being pregnant.
The themes of acceptance and understanding are quite common. The dragon is usually seen as a different or misunderstood creature, and Fluttershy helps both the other ponies and the dragon to accept and understand each other. For example, in many fanfics, the ponies are initially afraid of the dragon, but through Fluttershy's influence, they come to see the dragon in a new light. Also, Fluttershy's own growth in confidence when dealing with the dragon is a recurring theme.
Another theme is the exploration of nature. Since both characters have a strong connection to nature in the My Little Pony world. Fanfics might have them exploring different parts of the forest, discovering new plants or animals. Zecora with her knowledge of herbs and Fluttershy with her love for all living things make it a great combination for such nature - centered stories.
Friendship is a very common theme. Since Spike and Fluttershy are both beloved characters in MLP, many fanfics focus on how their friendship develops. For example, they might help each other overcome their fears or insecurities.