One common theme is friendship. Despite their differences, Fresh and Paper Jam often form a unique bond in these fanfictions. Another theme is adventure, as they usually embark on some sort of journey through the Undertale world.
There's a fanfiction called 'Fresh and Paper Jam's Adventure'. In this one, they go on a journey through different areas of the Undertale world that are usually not explored much. It has a lot of fun dialogues between the two characters and some cool action scenes as well. The author does a great job of capturing their personalities.
In the fanfic, Fresh might learn to respect boundaries more. His wild nature sometimes means he oversteps. But with Paper Jam, who has clear boundaries, he'll have to adjust. This will make him a more well - rounded character. For Paper Jam, he could develop a sense of humor. He's quite serious, but Fresh's antics can start to crack his serious exterior and he'll start to see the fun in things, which will completely change his personality for the better.
Well, perhaps in the fanfic, Fresh could be on one of his random travels through different AUs (Alternate Universes) and end up in Paper Jam's AU. Paper Jam, being a bit of an enigma in his own right, is initially suspicious of Fresh. But then they get caught up in a mystery that only they can solve together. It could involve some sort of strange disappearance of important items in Paper Jam's world, and their combined skills and personalities are what's needed to figure it out.
Use body language and expressions to enhance their interactions. Since they are in a digital world, their 'bodies' can do some unique things. Fresh might have his shades doing something cool when he's excited in a conversation with Paper Jam. And Paper Jam's paper - like form could show signs of confusion or interest, like the pages of his body ruffling. This visual aspect can make their interactions more vivid and engaging for the readers.
One plot idea could be that Fresh and Paper Jam team up to solve a mystery in their strange digital - world. Maybe there's a virus spreading that's causing glitches and they have to use their unique abilities to stop it.
One idea could be that Paper Jam discovers the reader drowning in a lake or pool. He could use his unique abilities, like creating paper platforms or ropes to reach the reader and pull them to safety. Then, there could be a sweet moment of the reader recovering and a growing bond between them.
One common theme could be rescue and salvation. Paper Jam might be the one to save the reader from drowning, which can symbolize him being a protector in their relationship. Another theme could be fear and vulnerability. The reader's experience of drowning shows their vulnerability, and how they deal with that in the presence of Paper Jam can be explored. Also, the theme of trust might come up. As the reader is in a life - threatening situation, they have to trust Paper Jam to help them.
The story can build tension by describing the reader's struggle in the water in detail. For example, talking about how their limbs are getting tired, how they keep going under and coming up for air less and less frequently. Also, the time it takes for Paper Jam to arrive at the pool can be a source of tension. If the writer drags out that moment, with the reader's situation getting more and more desperate, it really amps up the tension.
One popular one could be 'Fresh Encounters' which has an interesting take on their relationship. It shows how Fresh Sans and Error interact in a unique world within the Undertale fanfiction realm.