Friendship is a very common theme. Sting and Rogue are often depicted as having a deep and unbreakable friendship. Another theme is adventure. They go on various adventures together in many fanfictions. And of course, the theme of magic is always there as they are part of the Fairy Tail world which is full of magic.
Another common theme is power and growth. Writers often show how Rogue and Sting become stronger over time. For example, they might face a powerful enemy and through that experience, they learn new magic or improve their existing skills. It's about their journey to become more powerful dragonslayers.
One common theme is friendship. Since they are both dragon slayers in Fairy Tail, their friendship is often explored, like how they support each other through tough times.
The theme of loyalty also pops up a lot. Their loyalty to each other, to their guild, and to their ideals is a key part. It's often tested in various situations, like when they are faced with a choice between their own desires and the greater good of the guild or their friends.
One common theme is the exploration of their powers together. Since they both have strong magical abilities in the Fairy Tail universe, fanfictions often show them training or using their powers in unison against enemies.
Well, a really popular theme is power - up. In these fanfictions, Sting and Lucy often find ways to increase their magical powers while working together. It could be through a special training or finding a rare magical item. Another common theme is the exploration of their pasts. How their individual histories shape their relationship is an interesting aspect that many fanfiction writers like to touch on. Also, the theme of loyalty comes up a lot, especially when they face difficult situations and have to choose whether to stay true to each other or not.
One great story could be 'Sting and Rogue's Unseen Bond'. It delves deep into their relationship, showing how they support each other during difficult times in the Fairy Tail world. The author beautifully weaves their personalities together, making it an engaging read.
The theme of loyalty also frequently appears. They are loyal to each other and their guild. In some fanfics, this loyalty is put to the test, like when they have to choose between their guild and some greater good that involves the other. Also, adventure is a common theme. They go on quests together, facing all kinds of magical creatures and challenges along the way.
One common theme is friendship development. Since they are all characters within the same universe, fanfictions often explore how their relationships grow from just being acquaintances to close friends or more. Another theme is adventure. They might go on quests together and face various challenges that test their bonds.
There is a fanfiction that I really like which is 'Sting and Rogue: A Magical Bond'. This one focuses on how their individual magic powers interact and how that affects their relationship. It shows how they grow both as individuals and as a pair. It also has some great descriptions of the Fairy Tail world, making it a really immersive read.
Some Tumblr blogs dedicated to Fairy Tail fanfiction might also have what you're looking for. Follow some popular Fairy Tail blogs and check their fic recs (recommendations). They often share links to great fanfictions, including those about Sting and Rogue.