I'm not sure if there is specifically 'lemon' (which often implies mature or sexual content) fanfiction for this pairing. However, if you look on some general fanfiction websites, you might find some regular fanfiction about Jack Frost and Bunnymund. But it's important to note that fanfiction with inappropriate content may violate the terms of many platforms.
I really like 'The Bond of Winter and Spring' in the 'bunnymund x jack frost fanfiction' realm. It shows how Jack Frost's cool nature and Bunnymund's more earthy, warm - heartedness can complement each other. The story has some really touching moments where they start to understand each other on a deeper level.
Characterization. A good 'bunnymund x jack frost fanfiction' needs to have the characters true to their original selves. Jack Frost's mischievous yet kind nature and Bunnymund's gruff but caring side should be well - portrayed. For example, if Jack is suddenly too serious or Bunnymund too soft without proper development, it won't feel right.
One alternative theme could be their friendship. For example, stories about how they learn to understand and trust each other despite their initial differences. Jack, being the carefree spirit of winter, and Bunnymund, the guardian of Easter, have a lot of room for character development in a friendship - based story.
Obviously, the kids themselves are main characters. They would have characteristics from both Bunnymund and Jack Frost. Bunnymund and Jack Frost are also important characters as the fathers of the kids. There might also be other characters like Tooth Fairy or Sandy who could play supporting roles, perhaps helping the kids understand their powers or guiding them in their adventures.
I'm not sure specifically about 'jack frost x bunnymund yaoi fanfiction'. You could try searching on some well - known fanfiction websites like Archive of Our Own. There might be some works there.
One common theme could be the exploration of their different personalities. Jack Frost is often seen as more carefree and mischievous, while Bunnymund is more grounded. Their relationship in the fanfiction might play on how they balance each other out.
I'm sorry but 'lemon' in fanfiction often refers to adult - themed content, which is not appropriate to promote. You can look for general 'Jack Frost and Bunnymund' friendship or adventure - themed fanfictions on popular fanfiction websites like Archive of Our Own.
One popular 'jack frost x bunnymund fanfic' is 'Frost and the Bunny'. It beautifully weaves their different personalities together. The story has a lot of heart - warming moments as they learn to understand each other better.