A circulatory story is a type of narrative that comes full circle. It often begins and ends in a similar or related way. For example, it might start with a character in a particular situation, and after a series of events, the story returns to that same situation but with the character having changed or learned something.
Well, a circulatory story is like a journey that loops back. It's not just a straight - line plot. It could be about a theme too. Say the story starts with the idea of loneliness. Through different encounters and plot developments, at the end, it circles back to loneliness but shows how the understanding of it has evolved for the protagonist.