What is the fine-grained topic of the following text: As a Western reader, I found myself continually surprised by twists, turns and tropes that were like nothing I had come across before: where the hero would pick the wrong girl in the European fairy tale, he picks the right one and then comes to grief another way; where Western legends are usually content with mighty men having one formidable mother, here the tyrant Sosso is carried to term by three women, transferring between wombs every three months; and where marriage is usually a happily-ever-after scenario in the stories I grew up with, it is here the start of a battle of wits and (more often than not) sorcery between husband and wife. Only return the topic.
Differences between Western and non-Western narratives in literature