One idea could be that Robert, instead of dying, hears of Daenerys' rise in Essos. He decides to travel there to assess the threat. When they meet, they initially clash due to their different views on ruling. But as they interact more, they start to understand each other's motives and form an unlikely alliance against a common enemy, like the White Walkers.
Perhaps their relationship begins with curiosity. Daenerys has heard of the powerful Robert in Westeros, and Robert is intrigued by this Targaryen with a claim to the Iron Throne. As they communicate more, they find common ground in their desire for a just Westeros. They might start to fall in love slowly as they share their dreams and fears, and work towards building a better future for the Seven Kingdoms.
One idea could be a story where they meet as children. Perhaps they are both at some sort of diplomatic gathering of the great houses. They start off as friends, sharing stories about their dreams for their respective houses. This could then set up a future where they have a complex relationship as adults, torn between their loyalty to their families and their friendship. It would be a story about growing up in the world of Westeros and how relationships form and change over time.
Finding good 'Robert Baratheon and Daenerys lemon fanfiction' can be quite a challenge. First of all, the combination of these two characters is not a common one in the mainstream fanfiction community. However, if you search through some of the more niche or adult - themed fanfiction sites, you might come across some. But be aware that the quality can vary greatly. Some might focus too much on the 'lemon' aspect and lack in plot or character development.
There could be a fanfiction where Robert Baratheon and Daenerys meet through some magical or political upheaval. The 'lemon' part could be a spicy addition to their relationship. Maybe it starts with Robert being intrigued by Daenerys' power and beauty, and she sees him as a means to gain a foothold in Westeros. But it's important to note that this is a very different take from the original narrative.
Perhaps a plot point could involve his relationships. If he is reborn, he may handle his marriage to Cersei Lannister differently. He could try to build a more genuine relationship with her or find a way to avoid the animosity that was there before. This would have a huge impact on the political and family dynamics in Westeros.
One idea could be a story where Robert Baratheon discovers Jon Snow's true parentage earlier. This could lead to a complex relationship where he sees Jon as a potential heir or a powerful ally. He might take Jon under his wing, train him in the ways of leadership and warfare, much like he did with Ned Stark's other children.
One interesting fanfiction could be about an Oc Baratheon who forms an alliance with Daenerys. Maybe this Oc has some unique skills or knowledge that helps Daenerys in her conquest for the Iron Throne. For example, the Oc could be a great strategist and together they plan battles against their common enemies like the Lannisters.
Another plot might involve a journey that Robert and Myrcella embark on together. It could be a quest to find a long - lost relic or to seek the aid of a powerful ally. Along the way, they face various challenges that test their relationship and force them to rely on each other.
One plot idea could be that in a world where their genders are swapped, they still have to face the same political challenges. Female Jon, with her Stark honor, and male Daenerys, with his Targaryen ambition, form an alliance that slowly turns into a romantic relationship as they realize they can achieve more together. Another could be a scenario where they meet in a different setting, away from the main events of the original series, and their relationship develops from there.
One aspect to consider in this fanfiction could be the clash of cultures between the Baratheon and Stark families. Since Robert is a Baratheon and the OC is a Stark, their relationship might be shaped by the different values and traditions each family holds. For example, the Starks are known for their loyalty and honor, while the Baratheons can be more power - hungry. This could create interesting dynamics in the story, such as how they handle political situations together or how they resolve conflicts that arise from their family differences.