Power is a common theme. Both Cersei and Daenerys are power - hungry in their own ways in the original series, and fanfics often explore how they either compete or cooperate regarding power. For example, in many fanfics, they fight over who will rule Westeros.
Writing or seeking adult fanfictions involves inappropriate and often unethical content. It's better to focus on the positive aspects of the original characters in the official works, such as their leadership, their growth throughout the story, and their relationships that are suitable for general audiences.
In such a fanfiction, they might initially be hostile. Daenerys, with her dragons and army, could pose a huge threat to Cersei. Cersei, being the shrewd and power - hungry character she is, would likely try to outwit Daenerys. Maybe there would be some intense verbal sparring between them as they both try to assert their dominance over King's Landing.
One great 'cersei daenerys fanfic' is 'A Meeting of Queens'. It explores an alternate scenario where Cersei and Daenerys have to form an alliance. The author does a wonderful job of depicting their complex personalities and the power dynamics between them.
One possible plot twist could be that Cersei pretends to surrender to Daenerys. Daenerys, believing her, takes Cersei into her confidence. But Cersei is actually plotting a big betrayal from within. She could be secretly gathering her remaining forces and planning to assassinate Daenerys when the time is right.
One idea could be a fanfiction where Cersei and Daenerys meet in a diplomatic summit. They start off as rivals, but gradually come to understand each other's motives and the difficult positions they are in. They might end up forging an uneasy alliance against a common threat, like the White Walkers in the original series.
The main characters are Jon and Daenerys. Jon, who has a complex past including being a bastard in the North but also having a key role in the fight against the White Walkers. Daenerys, who has journeyed across the sea, freed slaves, and amassed an army. In the fanfiction of their meeting, they are the central focus, their actions and interactions driving the story forward.
In a 'Jon Snow and Daenerys meet' fanfiction, they might initially be suspicious of each other. Jon, being the honorable man he is, could be cautious about Daenerys' claim to the throne. Daenerys, on the other hand, might see Jon as a potential threat or an ally she can use. They could start by exchanging stories of their respective journeys, with Jon talking about the Night King and the threat from the North, and Daenerys sharing her experiences in Essos. Eventually, they might form an alliance to fight their common enemies, and who knows, perhaps there could be a romantic connection between them as well.
In a fanfiction where Sansa and Daenerys meet, they could initially be wary of each other. Sansa, having seen so much political intrigue in the North, might be cautious of Daenerys' power. Daenerys, on the other hand, could see Sansa as a potential ally or threat in Westeros. Maybe they start by exchanging stories of their hardships. Sansa could tell of the horrors she faced during the Bolton rule and Daenerys of her journey across the sea. Eventually, they might find common ground in their desire to rule justly and protect the people. They could join forces, with Sansa's knowledge of the North and Daenerys' military might, to face a greater threat like the White Walkers.
Another scenario could be a more tense meeting. Jon arrives with a bit of suspicion towards Daenerys, as he has heard tales of her conquering ways. Daenerys, on the other hand, is cautious of Jon as she doesn't fully trust the North. But as they talk, they gradually realize that they need each other to face the greater threats that loom over Westeros, like the White Walkers.