Their relationship can be developed through shared adventures. For example, if they go on a quest together to find a rare ingredient for Applejack's famous pies. Along the way, they face challenges and have to rely on each other, which deepens their bond.
A great plot could involve a mystery on the farm. Rainbow Dash comes to help Applejack and they discover something strange going on. Maybe some of the animals are acting oddly or there are strange markings in the orchard. As they investigate together, their friendship grows stronger as they rely on each other's unique skills.
A popular fanfic in this pairing is 'The Bond Between Colors'. In this, their friendship blossoms into something more special. It delves into how they face challenges together in Ponyville. For example, when there's a problem with the local fashion show and Rainbow Dash uses her speed to help Rarity get all the materials she needs in time. It's a really heartwarming read.
Friendship is a very common theme. Since they are both ponies in the same world, their friendship is often explored, like how they support each other through tough times.
In a fanfiction, Rainbow Dash's brother could be an outcast among the ponies. He doesn't have the same level of confidence as Rainbow Dash and struggles to find his place. However, through a series of adventures and with the help of Rainbow Dash and her friends, he learns to embrace his own strengths and differences, and eventually becomes a respected member of the pony community.
Another scenario in a fanfiction could be that Rainbow Dash contracts a mysterious illness that no pony can cure. As she gets weaker, the ponies around her try their best to help. But in the end, she succumbs to the illness. Her death would cause the ponies to come together to find ways to prevent such a tragedy from happening again, perhaps leading to new medical discoveries in Equestria.
The relationship can develop through shared experiences. For example, if they both face a common enemy or a difficult task. They can rely on each other's strengths. The human might be good at problem - solving in a different way than the ponies, and Rainbow Dash's speed and courage can be useful. Also, small acts of kindness, like Rainbow Dash sharing her favorite cloud treats with the human or the human making a special gift for Rainbow Dash, can deepen their bond.
One great fanfic could be about Rainbow Dash taking Scootaloo on a special flying adventure. It might include Rainbow Dash teaching Scootaloo new flying techniques. This would strengthen their bond and show how much Scootaloo looks up to Rainbow Dash.
A good Rainbow Dash x Rarity fanfic should have a strong understanding of their personalities. Rainbow Dash is brave and athletic, while Rarity is refined and creative. The story should play on how these traits interact. For instance, in a good fanfic, Rainbow Dash might be the one to encourage Rarity to take risks in her fashion designs.
A good fanfic in this regard often has a strong emotional connection between the two characters. It could be about how Scootaloo overcomes her insecurities with Rainbow Dash's support. This shows the power of their friendship.