There's a fanfic called 'In the Depths with Underfell Sans'. It stands out because it delves deep into the emotions of both the reader character and Sans. The author does a wonderful job of creating a believable relationship between them, starting from distrust and gradually evolving into something more.
I really like 'Underfell Sans: Unlikely Bonds'. It's a story that shows a different side of Underfell Sans. The way the writer describes his interactions with the reader character is really engaging. It also has some great action scenes that add to the overall appeal.
One great 'underfell sans x reader fanfiction' is 'A Dark Encounter'. It has a really interesting plot where the reader is thrown into the Underfell universe and has to navigate their relationship with Sans. The story is full of tension and character development.
First, understand the character of Underfell Sans. He's different from the normal Sans, more edgy and with a darker personality. Then, create an interesting scenario for the reader to interact with him. For example, a dangerous mission in the Underfell world.
One great 'g sans x reader fanfiction' is 'A Chance Encounter'. It has a really engaging plot where the reader character meets G Sans in a rather mysterious setting. The way their relationship develops gradually is really interesting.
Another theme is friendship or partnership. They often come together to face challenges in the Underground. For example, in many fanfictions, they join forces to defeat a powerful monster or solve a mystery that threatens their world. This theme of unity despite their differences is really appealing.
The contrast between the two characters. Underswap Sans is more laid - back and friendly compared to Underfell Sans who is more rough and edgy. When they interact in fanfictions, it creates a lot of interesting dynamics, like how they might clash or gradually understand each other.
Well, in 'underfell sans x papyrus fanfiction', their relationship is a key aspect. It can vary greatly depending on the author's interpretation. Some may focus on the loyalty between them, despite the cruel environment of Underfell. Others might explore how their personalities clash or complement each other. For example, Sans' cynicism in Underfell might contrast with Papyrus' more naive side, creating interesting storylines and character developments.
One great sans x reader fanfiction to start with is 'A Skeleton in Your Closet'. It has a really engaging plot that gradually develops the relationship between Sans and the reader. The writing style is easy to follow and it does a good job of capturing Sans' character.
A plot could revolve around an accident that causes their universes to merge partially. Underfell Sans and Sans find themselves in a strange new reality where they have to figure out how to get back to their own universes. Along the way, they learn about the differences and similarities in their lives, and this leads to some really interesting character development.
You can start by looking on Archive of Our Own (AO3). It has a large collection of fanfictions for various fandoms, including the Undertale AU crossovers like Underswap Sans x Underfell Sans. Another place could be Fanfiction.net, though the quality may vary more there. Additionally, Tumblr sometimes has users sharing or recommending such fanfictions in the Undertale fandom tags.
The fan base loves these characters so much that seeing them interact in new and unexpected ways is always a treat. The relationship between them can be explored in so many different ways, from friendship to rivalry. And the unique art styles and interpretations that often come with these fanfictions add to the overall appeal. There are also some really emotional stories that can be told about them finding common ground or learning from each other, which really tugs at the heartstrings of the readers.
Common themes in 'underfell sans x papyrus fanfiction' include power dynamics. Since Underfell is a harsher world, there might be a shift in the power balance between Sans and Papyrus. Additionally, redemption can be a theme. Maybe one of them has made mistakes in this unforgiving world and is seeking redemption. Also, the theme of trust, as they need to trust each other to survive in such a difficult environment.