One great idea for a fanfiction could be a story where Underswap Sans and Underswap Papyrus go on an adventure in the Underground. Maybe they encounter a strange new monster that no one has ever seen before. They have to use their unique abilities to figure out how to deal with this new threat.
Sans is often characterized by his laid - back attitude and powerful abilities. Underswap Papyrus, on the other hand, has his own distinct personality which is different from the regular Papyrus. He may be more serious or have different quirks, and their interactions as the main characters drive the story forward.
One interesting plot could be their initial confusion when they meet. Sans is used to his own world's Papyrus, and suddenly meeting Underswap Papyrus would be quite a shock. They might have a comical exchange trying to figure out who the other is.
A plotline could be that they discover a hidden part of the Underground. This new area could have different rules and strange creatures. They have to adapt quickly to survive and also figure out how this new place relates to the rest of the Underground.
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.
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 common theme is the exploration of differences. Underfell sans and underswap papyrus are from different universes with distinct personalities. Fanfictions often focus on how they deal with these differences, like underfell sans's more aggressive nature compared to underswap papyrus's more positive and energetic self.
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.
A great Underswap Sans x Papyrus fanfiction might be the one that delves into their backstory. It could explore how their relationship developed from when they were younger. Maybe there was a time when they had a big fight but then learned to understand each other better. This kind of story can be really heartwarming as it shows their growth and the strength of their brotherly love.
A third common theme is self - discovery. Both Papyrus and Sans might learn new things about themselves as they interact with each other and face various situations. This can be really interesting as it shows their growth as characters. For instance, Papyrus might discover a new side of his personality when he has to protect Sans in a dangerous situation.