Some fanfics stand out by adding their own unique twists to the genocide concept. For example, they might introduce a new character who tries to stop the genocide from within the story's framework, and the resulting power struggle and moral dilemmas are written in an engaging and thought - provoking manner.
One concept could be exploring the psychological state of the character who undertakes the genocide route in more depth. For example, how they gradually lose their sense of morality and what drives them to keep going despite the horror they are causing.
Papyrus was quite tired after a long day of waiting for humans to come through his puzzles. When it was bedtime, he climbed into his big, comfy bed. He thought about his brother Sans and how they had fun together. He also thought about his aspiration to be popular. He decided that he would work even harder on his puzzles and his cooking. As he lay there, he began to sing a little song to himself, a song about friendship and courage. His voice grew softer as he got sleepier, and eventually, he fell into a deep slumber.
Once upon a time, Papyrus was getting ready for bed. He fluffed his pillow and put on his favorite bone - patterned pajamas. He lay in his bed, looking at the ceiling. He started thinking about all the puzzles he had made that day. He hoped that tomorrow, some brave human would come along and try to solve them. As he drifted off to sleep, he dreamed of becoming a member of the Royal Guard. And that's how Papyrus' bedtime went.
Another common theme is self - discovery. The OC, being a new character in the Undertale universe, often goes through a journey of self - discovery. Papyrus can play a role in this, either by being a guide or by being part of the situations that make the OC learn more about themselves. In some fanfictions, the OC discovers hidden powers or aspects of their personality while interacting with Papyrus.
I really liked 'The Unlikely Bond'. In this fanfic, Papyrus and Chara start off as enemies but gradually come to understand each other. The story has a lot of emotional depth, with Papyrus trying to see the good in Chara and Chara learning to open up. It's full of heartwarming moments and some really cool plot twists that keep you hooked.
One common theme is friendship. Papyrus and Undyne are often shown building a strong bond of friendship through various adventures or just daily interactions in the Underground. Another theme is mutual respect. They both recognize each other's strengths, like Papyrus admires Undyne's fighting skills and Undyne respects Papyrus's determination.
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, a cool concept is the reconstruction of the world. In 'undertale after genocide fan fiction', the world that has been devastated by the player's actions might be shown in the process of trying to rebuild. It could involve new forms of leadership among the remaining monsters, new rules and social structures emerging. Also, the psychological state of Flowey could be further explored. He's already a complex character, and in the aftermath of genocide, his nihilistic view might change or intensify in interesting ways.