Well, in a Naruto and Cersei Lannister fanfiction, Naruto's ninja skills would be a novelty in Westeros. Cersei might be both intrigued and threatened by him. Naruto, on the other hand, would probably be confused by the complex politics of the Seven Kingdoms. The story could explore how Naruto's values of loyalty and friendship could either influence Cersei or be corrupted by her manipulative nature. It could also show how the people of Westeros react to this strange, powerful newcomer.
Revenge is another theme. Given the many slights and betrayals Cersei experiences in the original story, fanfictions sometimes focus on her seeking revenge. It could be revenge against her enemies in King's Landing or those who have wronged her family in the past.
If there was a fanfiction about Naruto and Cersei Lannister, it could start with Naruto arriving in Westeros through some sort of magic or strange portal. Cersei would see him as either a threat or an opportunity. Naruto would likely be shocked by the brutality and political intrigue in Westeros. Their relationship could develop in various ways, such as Naruto trying to bring peace to the war - torn land while Cersei is focused on maintaining her own power.
There are quite a few. You can start by checking out some popular fanfiction websites like Archive of Our Own. There you might find stories that explore different scenarios of Cersei Lannister being pregnant, some might focus on her relationships during this time, others on how it affects her political standing in the fictional world.
One common theme is the struggle for power. Even while pregnant, Cersei is a character who desires power. So many fanfictions explore how she tries to maintain or gain more power during her pregnancy. Another theme could be family. Her pregnancy might change her relationships with her family members, and this is often explored in these stories.
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.
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.
Well, without more context about this 'Cersei Lannister son lemon fanfiction', it's hard to give detailed information. However, generally in fanfiction, if it's about Cersei and her son, it could be a way to rewrite parts of the story's narrative. Maybe it gives her son a more heroic or tragic role, and Cersei's relationship with him could be a central point for character development, like showing a softer side of her that we rarely see in the official story.
Finding good 'Harry Potter' and 'Cersei Lannister' lemon fanfiction can be a challenge. First, the two franchises have very different settings and tones. 'Harry Potter' is a story about magic and friendship in a school - like setting, while 'Cersei Lannister' is from a much darker, more politically - charged world of 'Game of Thrones'. The idea of a lemon fanfiction combining them seems rather odd. Additionally, many platforms have rules against explicit or inappropriate content, so such fanfictions may be hard to come by or may only exist in less - regulated corners of the internet.
One great piece of Cersei Lannister fanfiction is 'The Red Queen's Gambit'. It delves deep into Cersei's psyche, exploring her insecurities and her thirst for power in a more nuanced way. It shows her making different choices than in the original series and how those choices shape the world around her.