Perhaps they are lost in a blizzard. They find a small cave to take shelter in. As they huddle together for warmth, they start talking about their future. The closeness and the shared dreams make them realize their deep love for each other and they kiss. It could also be that Anna has just made a big decision for the kingdom that benefits the people, and Kristoff is so proud of her that he kisses her in front of the whole town.
One possible scenario could be that they share a kiss after a dangerous adventure. Maybe they were facing a powerful snow monster and Kristoff saved Anna. In the heat of the moment, filled with relief and newfound admiration, they kiss. Another could be during a celebration in Arendelle. After a successful harvest or a new alliance, the joy in the air leads to a spontaneous kiss between them.
A scenario might be when Anna has been ill and Kristoff is by her side constantly. When she finally recovers, the emotions are overwhelming. They look into each other's eyes and slowly move closer until their lips meet. It could also be in a moment of self - discovery for both of them. They realize their feelings for each other while walking through the beautiful forest near Arendelle and share a tender kiss.
One popular scenario could be after they've defeated some great danger together. For example, after facing a new threat to Arendelle, they realize how much they mean to each other and share a passionate kiss. The setting might be in the middle of a snow - covered field, with the moon shining bright above them.
The kiss could deepen their relationship immediately. It might make them more open and affectionate with each other. For example, they could start holding hands more often and being more comfortable sharing their thoughts and feelings.
One possible plot could be that Anna and Kristoff go on a journey to find a magical flower that is said to have the power to heal any ailment in the Enchanted Forest. Along the way, they face various challenges like wild animals and difficult terrains. They also have to deal with their own relationship issues as the stress of the journey tests their love for each other.
One possible scenario could be that Anna slips on the ice while exploring the frozen forest alone and sprains her ankle. Another might be that she gets hit by a falling icicle during a snowstorm. Or perhaps she has an encounter with a wild animal in the frozen wilderness and gets scratched.
In many fanfictions, the relationship growth is shown through their support for each other. When Anna is having a hard time dealing with the politics of the kingdom, Kristoff is there to comfort her. And vice versa. The kiss is a celebration of their mutual support. It could be during a grand ball in the castle, where they steal a moment away from the crowd to share this special moment.
One plot idea could be that Anna and Kristoff get lost in a magical forest on their way back from a diplomatic mission. They have to rely on each other and their skills to find their way out while also facing strange creatures. Another could be a story where they have an argument over how to handle Elsa's new ice - related discovery, and it tests their relationship. Maybe a third idea is that Kristoff discovers a long - lost relative who doesn't approve of his relationship with Anna, and they have to work through that together.
One great fanfiction could be where Anna and Kristoff's baby has a special connection to the magic of Arendelle. Maybe the baby can communicate with the spirits of the forest like Elsa. Another story might focus on the challenges of raising a baby in a kingdom with so much history and responsibility.
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.
One idea could be that their baby has a special power related to ice like Anna and Elsa. Maybe the baby can create beautiful ice sculptures at a very young age. This would add a new element to the Frozen world and also show how the family's powers are passed down.
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.