There could be various interpretations of 'locked cock stories'. Maybe it's some sort of fable or legend in a very specific culture or community that uses this rather strange term. But without clear information, I can't really give a proper example of such a story.
I don't think 'locked cock stories' are common. Most traditional and popular story genres such as fairy tales, adventure stories, or romances don't involve such a concept. It could be something very unique to a particular group or individual's creative idea.
I'm not sure specifically what 'locked up cock stories' mean in a non - vulgar sense. It could potentially refer to stories about roosters being locked up in a coop perhaps. But if it's some sort of made - up or very specific local term, more context is needed.
There are also heartwarming stories about friendship and family. Stories that show how people support and love each other in difficult times can be very inspiring and a much better choice than any inappropriate content.
Well, it might be that the 'little cock' is a pet in this fanfiction. The plot could revolve around the owner's decision to cage it, which could be due to some behavioral issues. The story could then show the process of the cock adapting to the cage life, and maybe there are other animals or characters in the story that interact with it in different ways. For example, there could be a kind-hearted neighbor who tries to convince the owner to let the cock out sometimes.
Perhaps it's a metaphorical 'little cock' which represents a young, innocent spirit. The cage could symbolize restrictions in society. So the fanfiction might be about how this young, free - thinking entity tries to break free from the constraints of the 'cage' which could be rules, norms or a difficult family situation.
The main character would most likely be the little cock itself. It's the one directly affected by being locked in the cage, so the story would probably revolve around its experiences.