One key element is the diaper itself. It often becomes a central part of the story, whether it's about the pony getting used to wearing it or the reactions of others to it.
One popular mlp in diapers fanfic is 'The Little One's Adventure'. It tells an interesting story about a pony in diapers and its daily experiences in a very cute way.
One interesting mlp in diapers fanfiction could be about a young pony who accidentally finds a magic diaper that gives it special powers. It might then go on adventures with its friends while trying to keep the diaper's secret.
Some social media groups dedicated to MLP might also be a source. Members might post links to or discuss their favorite mlp in diapers fanfiction. However, be cautious as the quality and content might vary widely.
I'm not sure if it's extremely popular. There are so many MLP fanfics out there that it's hard to say for certain. It might have a niche following among those who are interested in unique or off - beat interpretations of the MLP world.
A 'back to diapers fanfic' might be centered around a specific fandom. Say, if it's related to a superhero fandom, a hero might be cursed or affected by some magic that makes them regress to a state where they need to wear diapers. This could then explore how the other characters in the story react to this change, how the affected character copes with this new and embarrassing situation, and how it impacts the overall dynamic of the fictional world within the fanfic.
Regular MLP fanfic usually focuses on the positive aspects like friendship, adventure, and the magic of Equestria. MLP Dark Fanfic, on the other hand, often delves into darker themes such as conflict, despair, and a breakdown of the harmony in the pony world.
The main difference is the tone. Regular MLP fanfic is often light - hearted and focuses on friendship, adventure, and positive themes. But MLP scary fanfic has a darker, more ominous tone. It's all about creating fear and unease. Also, the plotlines are different. While regular fanfic might have a story about ponies helping each other out, scary fanfic could involve ponies facing unknown terrors.
There might be such a fanfic out there, but it's not a common or mainstream type of fanfic. Some niche or more experimental fanfic writers may have explored this idea, but it could also be that it doesn't exist at all. You could try searching with specific keywords related to 'ciel' and 'diapers' in the fanfic search engines of different websites.
There could be. The world of fanfiction is extremely diverse, with writers exploring all kinds of unusual scenarios for their favorite characters. 'Harry Potter Wears Diapers' might be a humorous or alternative take on the character by a creative fan writer. But it may not be easy to find as it's not a common or typical fanfic theme.