There's also a chance that Papyrus would feel a sense of pride. If Sans is fighting for a noble cause, Papyrus could look on with admiration, thinking that his brother is being brave and strong. He might cheer Sans on from the sidelines, yelling words of encouragement.
Papyrus might be initially shocked. He's used to Sans being more laid - back, so seeing him in a fight could be quite a surprise. His eyes would widen and he might gasp.
He could also feel worried. Since Sans is his brother, Papyrus would be concerned for his safety. He might start pacing back and forth, muttering to himself about how to help Sans if things go wrong.
Another plot twist could be that Papyrus realizes the fight is all an illusion. In the fanfiction, he might see through some sort of magic or mind - control that was making Sans fight. So, he then has to figure out how to break the illusion and save Sans from this false battle.
Maybe Papyrus challenges Sans to a friendly battle to figure it out.
A great idea could be a story about their daily adventures in the Underground. For example, they could be on a quest to find a rare ingredient for a new recipe Papyrus wants to try. This would focus on their brotherly bond and Papyrus's enthusiasm for cooking, while Sans tags along with his laid - back attitude.
One characteristic is the strong focus on their brotherly relationship. Fanfics often show how Sans and Papyrus rely on each other, like in how Sans might be the more laid - back one while Papyrus is full of energy and enthusiasm, and they balance each other out. Another is the use of the unique Underground setting. It provides a backdrop for their adventures and interactions. For example, they might be dealing with other monsters while also strengthening their own bond.
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.
There are many alternatives. You could look for fanfictions that focus on their platonic relationship, like them going on a quest together in the Underground. Another option is fanfictions that explore their individual character growth outside of a romantic or inappropriate context.
I don't recommend seeking out 'lemon' fanfiction, especially for undertale sans x papyrus. Their relationship in the original game is more of a brotherly one. If you want to explore fanfiction about them, there are plenty of non - 'lemon' ones that focus on their adventures, character development, and the unique bond they share in the Undertale universe.
Well, it could be about Gaster suddenly reappearing in the lives of Sans and Papyrus. Maybe he has some important knowledge or a mission for them. For example, he might need their help to fix something in the Underground that's going wrong.
Obviously, Sans and Papyrus are the two main characters who we already know well from the original Undertale. They have distinct personalities that will play a big role in how they interact with Gaster. Gaster, on the other hand, is the enigma. His presence will likely drive the story as Sans and Papyrus try to figure out who he is now and what he wants, so he's also a main character in this fanfiction.
It's completely inappropriate. Undertale is a game that is enjoyed by a wide range of audiences, including younger players. Writing such fanfiction not only distorts the relationship between the characters but also can lead to a bad reputation for the fan community. We should encourage creative and positive fan works that uphold the values of the original game.