There's also 'Swap Brothers' Bond'. This fanfic delves deep into the brotherly bond between Sans and Papyrus in the Underswap setting. It shows their daily adventures and how they support each other. The author does a great job of capturing the essence of their swapped selves, and it's full of humorous and touching scenes.
One main theme is identity. Since it's an underswap, their identities are different from the original, and exploring how they adapt to these new roles is a big part. For example, if Papyrus is more like the original Sans in some aspects, how does he deal with that change.
Common themes include loyalty. They are extremely loyal to each other in most fanfics. Another one is the theme of overcoming challenges. Whether it's dealing with other characters or facing difficulties in their world, they work together to overcome them. There's also the theme of fun and humor. Their interactions are often filled with jokes and light - hearted moments, which makes the fanfics enjoyable to read.
The writing style is crucial. A good fanfic will have smooth and engaging prose. It won't be full of grammar and spelling mistakes. For this pairing specifically, the interactions between the two should be believable. They come from different 'universes' within the Undertale multiverse, so how they react to each other's differences and similarities can make or break the story. Also, a bit of humor or emotional depth can really enhance the fanfic.
There are some. You might want to check fanfiction.net as well. However, the quality can vary a lot. Some fanfictions focus more on the relationship development between Underswap Papyrus and Underfell Sans, while others might include more action or adventure elements related to their world.
One popular sans x papyrus underswap fanfic is 'A Swap in Fate'. It explores an alternate universe where their roles are swapped in really interesting ways. The character development is quite engaging.
Well, there's a fanfic called 'Underswap Bond'. In this one, it really focuses on the deep emotional bond between Papyrus and Sans. It has some really cute moments where they rely on each other and understand each other better than anyone else in their world. There's also 'Swapped Skeleton Adventures' which is more of an action - filled fanfic that still manages to show their great relationship.
One great Underswap Sans x Reader fanfiction is 'A Swap in Fate'. It has a really engaging plot where the reader character is transported to the Underswap universe and forms a unique bond with Sans. The author does a wonderful job of portraying Sans' personality in this AU.
One great 'Underswap Sans x Chara' fanfiction is 'A Different Bond'. It delves deep into their relationship, exploring how their personalities interact in a unique UnderSwap universe. The story has a great balance of action and character development.
Personally, I don't recommend seeking out lemon fanfictions as they usually violate the ethical and appropriate boundaries. But if you really want to explore fan - made content about Underswap Sans and Papyrus in a proper way, try looking at fan - made comics on platforms like DeviantArt. You might find some interesting interpretations of their relationship that are more suitable for general audiences.
The clash of personalities. Underswap Papyrus is usually quite positive and energetic, while Underfell Sans has a more edgy and guarded nature. This contrast can lead to really engaging interactions in the fanfictions.