In some fanfiction, it might be Varys. He was known for his intelligence network and his ability to work from the shadows. He could have seen Joffrey as a threat to the stability of the Seven Kingdoms. So, he arranged for the young king's death, perhaps thinking that a more malleable ruler could take his place and be more easily influenced to make better decisions for the realm.
One interesting scenario could be that it was actually a planned assassination by a secret alliance of the Starks and the Tyrells long before the wedding. They worked together in the shadows, using Sansa as an unwitting pawn. The Tyrells provided the poison, and the Starks had someone in place at the wedding to ensure Joffrey drank it.
Sansa Stark is frequently in these fanfictions. As someone who was a victim of Joffrey's cruelty, if he is in a time loop, Sansa might find herself in a different situation each time. Maybe in one loop Joffrey starts to treat her better, which would completely change her perspective and her own actions within the story. Also, Cersei Lannister could be involved. As Joffrey's mother, she would be very concerned about any changes in her son during the time loop and might try to interfere to keep things as she wants them.
In fanfic, the relationship between Joffrey and Sansa is often a complex and twisted one. Joffrey was cruel in the original story, but in some fanfics, writers might explore a different side of him in relation to Sansa. It could be an exploration of what might have been if Joffrey had not been so evil, perhaps delving into a more romantic or at least a more nuanced connection between them.
In a fanfiction, the lemon could play a magical role. Imagine Joffrey is cursed, and the only way to break the curse is through a lemon - related task. This could lead to a whole new side of Joffrey being explored as he has to rely on something as simple as a lemon to save himself.
In fanfiction, a smart Joffrey often has strategic thinking. He's able to plan ahead and manipulate situations to his advantage, much like a chess player. For example, he might outwit his enemies in court politics.
The 'joffrey cersei lemon fanfic' is likely a work of fan fiction centered around the characters Joffrey and Cersei. The term 'lemon' might lead one to believe that there could be some elements of a more mature or romantic nature in the story. However, it could also be a more in - depth exploration of their characters and their relationship in a different light. It might take the already complex relationship between mother and son in the original story and add new dimensions, perhaps exploring their power dynamics, their mutual protectiveness (if any), and how they interact with other characters in this fan - created scenario.
One popular 'Harry is Joffrey' fanfiction might be 'The Unlikely Alliance'. It explores a scenario where Harry and Joffrey, coming from different fictional universes, find common ground. Another could be 'Harry in Joffrey's Court' which delves into how Harry would navigate the political intrigue of Joffrey's world. There's also 'Joffrey and Harry: A New Bond' that focuses on their unexpected friendship and how it changes the fate of both their kingdoms.
Joffrey was a cruel character. It's hard to imagine a traditional love story for him. His nature was so malicious that any form of love seemed out of place. He was more interested in power and causing pain. So, in the context of the show, a real love story for him seems almost impossible.