One common theme could be the battle between light and dark. Luna represents the moon and has an association with the night, which can be seen as a time of mystery and sometimes danger. King Sombra is a dark character. So the fanfic may explore this contrast in terms of their powers and personalities.
Another theme might be forgiveness or redemption. If the fanfic takes a different turn, it could be about Luna trying to redeem Sombra, believing that there is good in him despite his past actions. This would be a theme of second chances and the power of kindness.
Power struggle is also likely to be a theme. Both Luna and Sombra have their own powers. Luna has her lunar powers and Sombra has his dark magic. The fanfic could focus on how they use these powers against each other or how they come to an understanding about the proper use of power.
In terms of the plot, it could start with Sombra's return or some sort of threat that he poses. Luna then steps in to deal with it. The setting within the My Little Pony world would be important. It could be set in Canterlot or some other location. The fanfic might also introduce new characters or use existing ones to support the main plotline between Luna and Sombra.
Power is also a common theme. Sombra was known for his power, and fanfics often deal with how he uses or misuses it. Some stories might have him seeking more power, while others could show him learning to control his power in a more positive way. Another theme is the exploration of his backstory. Writers like to fill in the gaps about his past, like where he came from and how he became so powerful in the first place. This helps to flesh out his character more fully in the fanfic world.
Power and corruption is another common theme. King Sombra was power - hungry in the original story, and fanfics expand on this. They might show how his thirst for power not only affects himself but also those around him. It can also explore how power can corrupt even the best of intentions.
Well, one possible plot could be that they start as enemies as in the original lore. But then, an external threat forces them to work together. They gradually learn about each other's pasts and find some common ground. Maybe they both had difficult upbringings in different ways. And in the end, they form an unlikely alliance that changes the power dynamics in Equestria.
Their relationship could develop in a more complex way. Maybe Sombra has a hidden past that Luna discovers, which makes her pity him. This could lead to her trying to help him reform. Sombra, on the other hand, might be initially distrustful but then gradually open up to Luna as she shows him kindness. They could end up as friends or at least allies who have a deep understanding of each other.
One common theme is power struggle. King Sombra is a powerful and often menacing character, and Twilight is also very powerful in her own right. So, their interactions can be centered around who has more power or how they can use their powers against each other.
One idea could be a story where Luna and Sombra meet in a dream realm. Luna, being the princess of the night, has the power to traverse dreams. Sombra, once a powerful and dark figure, could be lost in this dream realm. Luna tries to understand his past and help him find redemption. It could explore themes of forgiveness and the power of understanding.
One common theme is friendship. Since Spike and Luna are from different parts of Equestrian society, their friendship can be explored in many ways. For example, how they bridge the gap between a young dragon and a princess of the night.
Another theme is friendship. Even as a baby, Luna is shown forming bonds with other ponies or characters, like how she might interact with her sister Celestia in a more innocent and playful way. And these interactions help shape her future relationships. For example, in some fanfics, her early experiences with friendship teach her important values that she carries into her later life.
A common theme is friendship. Despite their different personalities, they often end up becoming friends in fanfics. Another theme is magic. Since both are associated with magic in the My Little Pony world, their magical abilities are often explored. For example, they might combine their magic to defeat a common enemy.