Literary cycles are groups of stories grouped around common figures, often (though not necessarily) based upon mythical figures or loosely on historic ones. Cycles which deal with an entire country are sometimes referred to as matters. A fictional cycle is often referred to as a mythos.
The Japanese literary concept of sekai (世界, lit. "world") bears strong similarities to that of a cycle. Those surrounding Minamoto no Yoshitsune and the Soga brothers are likely the most popularly reproduced.
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