Perhaps in a fanfiction, Riley starts to suppress one of them, say Sadness, too much. Joy realizes that this is actually harmful to Riley in the long run. So she goes on a journey with Sadness to find a way to make Riley accept Sadness again. This could involve adventures in different parts of Riley's mind and facing various challenges together.
Another idea is that there is a new emotion that enters Riley's mind and it seems to be a threat to both Joy and Sadness. They have to team up to figure out what this new emotion is and how to deal with it. Along the way, they discover new sides of each other and strengthen their bond.
The fanfic might be about a situation where Joy and Sadness accidentally swap their functions for a while. This causes chaos in Riley's emotions as they try to adapt to their new roles. As they struggle, they develop a deeper bond and a newfound respect for what the other does.
One way to explore their relationship in fanfiction is to focus on how they balance each other. For example, in a scenario where Riley is going through a tough time at school. Joy tries to keep things positive but Sadness's presence is also crucial. They could start to understand each other more deeply as they both work towards helping Riley. Maybe Joy realizes that Sadness has an important role that she hadn't fully appreciated before.
Sadness might become more confident. Usually seen as the downer emotion, in the fanfic, she could grow by standing up for herself more when Joy is being too overbearing. For example, when they are dealing with a difficult situation in Riley's mind, Sadness could assert her ideas more strongly and Joy would start to respect her for it.
One idea could be a story where Joy and Disgust have to team up to help Riley through a new and strange situation. Maybe Riley has to eat a very unusual food for a school project. Disgust is initially against it, but Joy tries to find the positive side and together they encourage Riley to give it a try, leading to a new experience for her.
A possible plot is that the control panel in Riley's mind gets a malfunction, and the emotions have to work together in a completely new way. They might have to swap their usual functions, so Sadness has to take on the role of Joy for a while. This could lead to some really strange behaviors from Riley on the outside. Also, what if an outside force, like a dream character, tries to invade the inside world of Riley's emotions and disrupt their harmony?
A great plot for an Inside Out Anger x Disgust fanfiction is when Riley starts to experience a new type of emotion that is a mix of both anger and disgust, and Anger and Disgust have to work together to understand and manage it. They could start off at odds, with Anger thinking it's more of his domain and Disgust disagreeing. But as they explore this new emotion further, they learn to respect each other's perspectives. Also, a plot where they get trapped in a part of Riley's mind that is filled with memories that make both of them uncomfortable could be interesting.
Perhaps in the fanfiction, there's a competition among the emotions. Joy and Disgust form an unlikely alliance to win. They decide to focus on making Riley more confident in her own unique tastes. So they work on getting her to embrace her individuality without being too self - conscious. This would involve Joy's positive outlook and Disgust's sense of what's appropriate for Riley.
One idea could be creating an OC who is a new emotion in Riley's mind. For example, an emotion of 'Wonder' that gets activated whenever Riley experiences something truly amazing. This OC could interact with the existing emotions, like Joy being both excited and a bit jealous of this new emotion's unique role.
In 'joy x sadness fanfic', the combination is fascinating because it can explore how two very different emotions interact. Joy might bring out a different side of sadness, and vice versa. It can also be a way to delve into complex emotional themes in a fictional setting. For instance, how can joy and sadness co - exist in a relationship? This can lead to unique storylines that are both heartwarming and heart - wrenching at the same time. Moreover, it gives writers a chance to play with different character traits and develop them in new and unexpected ways.
Well, perhaps the plot could involve how Joy's pregnancy affects the other emotions in Riley's head. For example, Sadness might be extra worried and trying to be more helpful. Fear could be constantly on edge about the new situation.