One idea could be exploring the origin of the cults in the game. Maybe a fanfic could focus on a character who discovers the ancient secrets that led to the formation of these cults, and their journey to either embrace or fight against it.
Another plot could revolve around the relationships between different cultists. For example, a love story between two cultists from rival cults. They have to navigate their feelings while being loyal to their respective cults, and the conflicts that arise from this situation would be interesting to explore.
A third idea could be a fanfic where a new cultist tries to rise to power within a cult. They face various challenges, like dealing with jealous rivals, solving mysteries related to the cult's rituals, and trying to gain the favor of the cult's leaders. This could show the internal politics and power struggles within the cult.
First, give the character a clear motivation. For example, if they are in a cult, are they there for power, knowledge, or something else? This will drive their actions throughout the story.
One idea could be that the male rival discovers the yandere's true nature early on. He could then try to expose her to protect the senpai. For example, he finds some evidence of her stalking and uses it to warn the senpai.
Maybe in the fanfiction, there could be a situation where Ayano has a rival for her love interest, and Oka, being the occult - loving character, uses some sort of supernatural method to help Ayano get rid of the rival. This could lead to a lot of drama and moral dilemmas for both characters.
One idea could be to create an OC who is a transfer student from a different country with a unique cultural background that affects their yandere tendencies. For example, they might have a different view on love and jealousy based on their home culture.
A possible plot is that the male rival discovers Ayano's yandere side early on. Instead of being scared, he decides to try and help her overcome her dark tendencies. This could lead to a series of heart - to - heart conversations and attempts at reform. Or, perhaps there's a misunderstanding where the male rival thinks Ayano is in danger and tries to protect her, which makes Ayano question her own motives towards him. Also, they could be paired up for a school project and through the long hours of working together, a unique relationship forms between them.
There are fanfics that focus on the backstories of the characters in yandere simulator. Maybe a story about how a certain character became the yandere they are. It could involve a tragic past or some sort of psychological trauma that led to their extreme behavior.
Another plot could revolve around the characters having premonitions of the events that are going to occur in the quarry. They then have to decide whether to trust these visions and how to act upon them. This could add a whole new layer of suspense and mystery to the story.
One idea could be a time - travel plot. The Backyardigans accidentally find a magical object in the backyard that sends them to different eras in history. They could have to work together to find their way back home while also learning about the different time periods. For example, they might end up in the prehistoric era and have to deal with dinosaurs.
One idea could be a story where one of the dalmatian puppies gets lost during a family outing and has to find its way back home, facing various challenges along the way.
One idea could be exploring the backstory of a minor character in the Bioshock universe. For example, a splicer's journey before they became spliced. It could show how they were once an ordinary citizen of Rapture and what led them to make the fateful decision to use ADAM. Another plot could focus on an alternate timeline where the protagonist makes different choices. Maybe they side with the wrong faction and have to deal with the consequences. A third idea is a story centered around a new type of plasmid that has unexpected effects on the user and how it impacts the power dynamics in Rapture.