She could be different in terms of her morality. While Cersei is often seen as self - serving and ruthless, the OC daughter could be more empathetic and have a stronger sense of justice. Another way is in her approach to power. Cersei grabs power through manipulation and force, but the daughter might strive for power in a more diplomatic and collaborative way. Also, in her relationships. Cersei has a rather tumultuous love life, but the daughter could be more stable and choose her partners more wisely.
In fanfiction, an OC daughter of Cersei Lannister can be different in multiple ways. For starters, she may not inherit Cersei's paranoia. Cersei is constantly worried about threats to her power, but the daughter could be more confident and less fearful. She could also have a different attitude towards other houses. Cersei is often in conflict with other houses, but the daughter might see the value of alliances. Moreover, the daughter may have different interests. While Cersei is mainly focused on ruling and power, the daughter could be interested in art, culture, or learning, which would set her apart from her mother in a significant way.
She could be developed as more empathetic. While Cersei was often self - centered and ruthless, her daughter could be shown as having a heart for the common people. For instance, she might secretly help the poor in King's Landing without her family's knowledge.
You should start by researching Cersei's character traits thoroughly. When introducing the OC, make sure they have a believable reason to interact with Cersei. Regarding the lemon aspect, it's important to write it in a tasteful way. You could write it as a passionate moment that reveals new sides of both characters. Also, consider the setting and how it can add to the mood.
To develop the male OC, start with his goals. Maybe he wants to gain power and sees Cersei as a means to that end. His appearance can also play a role. If he has a striking look, it might attract Cersei's attention. His relationships with other characters are crucial too. If he has a close friend or mentor, they could influence his actions towards Cersei. For instance, if his mentor warns him about Cersei's dangerous nature, he has to decide whether to listen or pursue his own desires.
You can start by looking on Archive of Our Own (AO3). It has a large collection of fanfictions, and there are likely many Cersei Lannister OC ones there. Just use the search function and type in relevant keywords.
One common theme is the struggle for power within the Lannister family dynamic. Since Cersei is so power - hungry, her OC daughter might also be drawn into the power games of King's Landing. Another theme could be the idea of identity. Growing up as a Lannister has its own set of expectations, and the OC daughter may have to figure out who she really is outside of her family's reputation. Also, themes of love and betrayal often come up. She might face situations where she has to choose between loyalty to her family and her own feelings.
There's also 'Cersei and the Unknown Heir'. In this fanfiction, the OC is a supposed heir to a powerful house and how Cersei deals with this threat and possible alliance is the focus. It's full of political intrigue which is typical of Cersei's storylines.
Power is a common theme. Cersei is all about power, and when an OC is introduced, the power dynamic becomes a central focus. Whether the OC is trying to gain power through Cersei or is a threat to her power, it drives the story. Another theme is loyalty. Cersei values loyalty, but also has a hard time trusting. So, the OC's loyalty or lack thereof can create a lot of tension. Love can also be a theme, though it might be a twisted form of love, given Cersei's nature.
In Cersei Lannister x OC fanfiction, the character dynamics can be very interesting. Cersei is a complex character with her own motives and desires. When paired with an Original Character (OC), it allows for new storylines. For example, the OC could be someone who challenges Cersei's power-hungry nature or perhaps becomes an unexpected ally. Their interactions might lead to power struggles, emotional turmoil, or even a strange sort of friendship. The key is how the author develops their relationship in the context of the 'Game of Thrones' universe.
To develop their relationship realistically, start with their initial meeting. If the male OC is from a different background, there should be some level of distrust or misunderstanding at first. For example, if he's from a poorer region and she's a Lannister, she may look down on him. As they interact more, small acts of kindness or shared interests can start to break down the barriers. For instance, if they both have a love for a certain type of horse, it can be a starting point. Their relationship should also be affected by the political climate around them. If Cersei's power is threatened, she may be more hesitant to show affection for the male OC for fear of looking weak.
Another place could be FanFiction.net. There are many talented writers who post their works there. However, the quality can vary. So, you might need to look through a few pages of search results to find really good Oc and Cersei Lannister fanfictions. It's also a good idea to check the reviews and ratings if available.