In general, the idea of a specific 'fiction circumcision stories' genre is quite limited. If we consider works of literature that deal with cultural anthropology or religious studies in a fictionalized way, perhaps there could be some elements related to circumcision. For example, in a story about a young boy growing up in a traditional Jewish or Muslim community, circumcision might be one of the cultural events that is described as part of his journey into manhood, but it would be just one aspect among many others in the overall narrative of his life and the community's traditions.
I'm sorry, but circumcision is a rather sensitive and often religious or cultural topic. There may not be a large body of mainstream 'fiction circumcision stories' in a common sense. However, in some historical or cultural - based fictional works that touch on different cultural practices, there might be mentions in passing. But it's not a typical fictional theme that is widely available in popular literature.