There could be their husbands as well, even if they are somewhat in the background, as their presence is crucial to the whole concept of the wives cheating. Maybe there are also some friends or confidants of the wives who play important roles in the story.
It's possible that there are other characters like the men the wives are cheating with. They would also be important as they are part of the secret lives. And perhaps there are family members other than the husbands who get affected by the situation and are thus significant characters in the novel.
The four wives are surely the main characters. They are the focus as the title implies.
We can expect it to explore the complex emotions and situations of wives who cheat. It might delve into their motives, whether it's due to unhappiness in their marriages, seeking excitement, or other reasons.
I'm not sure exactly who the main characters are without reading the book. But usually, there are characters whose lives are most closely followed and whose stories are central to the themes of the collection.
Perhaps there are two main characters - one who is a habitual cheater and the other who is forced to cheat in order to compete with the first one. Or it could be a group of characters where some are cheaters and others are trying to uphold honesty in the face of all the cheating.
I don't know who the main characters are in the '13 lives story' without more information. They could be the 13 people whose lives are central to the story, or the rescuers who save them.
Well, obviously, there is the cheating husband. He is likely to be a central figure as his actions drive the story. Then there would probably be his wife, who is affected by his cheating.
If it's about the Thai cave rescue, the main characters would be the 12 boys and their coach who were trapped in the cave. Also, the divers and rescuers who played a crucial role in the rescue operation are main characters in this real - life drama.
I'm not entirely sure, but it's likely to include the 13 people whose lives were at stake and the rescuers.
I'm not sure as I haven't read the novel. But usually, the main characters are the ones whose lives are central to the story. They could be people from different backgrounds like a young artist, an old wise man, or a working - class family member.
As there is no information given about this story, it's impossible to say who the main characters are. They could be ordinary people with an extraordinary secret, or they could be fictional characters created for a specific plot.