There probably is. The Frozen fandom is quite large and diverse, so it's not surprising that there could be a fanfiction where Kristoff and Anna are pregnant. It could be an interesting read as it might explore how their relationship evolves with the new addition to their family on the way. Maybe it would also show how their friends in Arendelle react to the news.
One possible plot could be that Anna discovers she's pregnant and she and Kristoff are overjoyed. But then they face challenges like how to keep Anna safe during her pregnancy in the sometimes - dangerous world of Arendelle. They might also worry about how to raise the child with all the responsibilities of ruling the kingdom.
They would become even closer. Kristoff would be more attentive to Anna's needs, always making sure she is comfortable and has everything she wants. He might also become more protective, not wanting her to overexert herself.
One plot idea could be them preparing for the baby. They might face challenges like finding a suitable place to raise the child in Arendelle. Kristoff could be worried about how to be a good father, while Anna is excited to start a family. They could also have some cute moments like choosing baby names together.
They would become closer. The shared experience of expecting a baby would deepen their bond. Kristoff would be more tender and protective towards Anna, and Anna would rely on Kristoff more for emotional support.
No, writing such fanfiction that involves sexual content is inappropriate. These characters are from family - friendly animations, and creating sexual fanfiction violates the spirit of the original work and can also be considered disrespectful to the creators and the intended audience.
Yes, there are many. You can start by looking on fanfiction.net. There are a variety of stories that focus on their relationship and kisses. Some might be more romantic, while others could be part of an adventure where their kiss is a significant moment.
A plot could revolve around their concerns and hopes for the future. Since they are royalty, they might worry about how their child will be raised with the responsibilities of the throne. They could have conversations with Elsa about it, seeking her advice. Also, it would be interesting to see how the townspeople react to the news of the pregnancy. Some might be overjoyed and start preparing gifts and celebrations in advance.
One possibility in fanfiction is that they start a family right away. Kristoff would be a loving and protective father, teaching their children about the ways of the forest and ice. Anna would pass on her knowledge of the kingdom and how to rule with kindness. Their home would be a place full of love and laughter, with Sven often coming around to visit.