Since we don't have more details about the 'bad blood short story', it's difficult to determine the main characters. However, they might be characters who have opposing interests or values. For instance, it could be an old - fashioned rancher and a new - age developer in a story where the rancher's land is at stake. The bad blood arises from their different views on land use and development, and these two could be the main characters.
I'm not sure as there's not enough information given. It could be two people in a feud or a group with internal conflicts.
Without reading the 'bad blood short story', it's impossible to know exactly who the main characters are. But, in a story with bad blood, you often have characters on different sides of an issue. It could be a story about a workplace, and the main characters are a long - term employee who feels threatened by a newly hired, ambitious colleague. The bad blood stems from the veteran's fear of being replaced and the new hire's eagerness to prove themselves, leading to a tense relationship between them as the main focus of the story.