Well, a plot could involve the reader being a magic user who accidentally casts a spell on Sans that makes him see the reader as his long - lost love. As they interact more, Sans starts to develop real feelings for the reader. Another option is that the reader is a singer in the Underground and Sans is drawn to their music. He starts to attend all of their shows and they gradually get to know each other. A third idea is that the reader is an artist and Sans discovers their art and is fascinated. He asks the reader to teach him about art, and this shared activity brings them closer together.
A great plot for an Underlust Sans x Reader fanfiction could be where the reader is a time traveler. They end up in the Underlust world and meet Sans. Sans is intrigued by this strange being from another time. The reader tries to find a way back home but in the meantime, they help Sans with some problems in the Underground. Maybe there's a magic item that only the reader can access due to their time - traveling abilities, and Sans needs it to save the Underground. As they work together towards this goal, their relationship blossoms.
One idea could be that the reader is a new arrival in the Underground and Sans is immediately intrigued by their unique personality. He starts to show them around in his own laid - back way, sharing jokes and secrets of the Underground along the way.
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.
To create a believable reader character, give them a clear backstory. For example, if they're from the Surface, explain what their life was like there. Also, give them distinct personality traits like being shy or outgoing. If they have a hobby, like reading or dancing, it makes them more relatable.
One common theme could be the exploration of an unlikely relationship. Given their different natures, the fanfictions might focus on how they overcome differences.
One common theme is the exploration of their relationship in the Underlust AU context. Since it's an AU with a focus on different interpretations of the characters' personalities and relationships, fanfictions often delve into how Papyrus and Sans interact with each other romantically or platonically in this altered world.
One unique idea could be a time - traveling sans x reader fanfiction. The reader could accidentally travel back in time to when Sans was first created or to a crucial moment in his past, and they have to navigate through that while also developing their relationship.
To find 'underlust sans x grillby fanfiction', first, you need to be aware of the characteristics of both characters in the Underlust universe. Sans is often depicted with certain traits, and Grillby has his own charm. Some fanfictions might focus on their relationship development, while others could be more about a specific adventure they go on together. Try using specific search terms related to their relationship, like 'underlust sans and grillby romance' or 'underlust sans grillby friendship' on fanfiction search engines. This way, you can narrow down your search and find some interesting fanfictions.
A plot could involve the reader being a healer of sorts. Flowey, being curious, approaches the reader. As they interact, the reader starts to show Flowey kindness that he's not used to. This kindness begins to thaw his cold, calculating nature. They could then go on adventures together in the Underground, with Flowey slowly becoming more protective of the reader. Also, the reader could introduce Flowey to new concepts like friendship and self - sacrifice, which would be a huge change for him.
One plot idea could be that the reader is a new ninja in the village and Sasuke is assigned to train them. Through the training sessions, they start to understand each other better and develop feelings. Another could be that the reader has a special power that Sasuke needs to help him in his quest for revenge, and as they work together, love blossoms.
One idea could be that the reader is a new resident in the haunted house where Beetlejuice lurks. They accidentally summon him while trying to fix up the old place. Another could be that the reader is a medium who can see Beetlejuice clearly and they form an unlikely friendship. Maybe the reader is a lost soul like Beetlejuice and they find common ground in their otherworldly existence.