I don't know as I have no information about this 'a2 short story'. It could have characters like a brave hero, a cunning villain, or an ordinary person in an extraordinary situation.
Since we don't have details about the 'a2 short story', the main characters could be anyone. They could be a group of friends in a coming - of - age story, each with their own personalities and dreams. Or it could be a single character in a story of solitude, like a lighthouse keeper dealing with his own thoughts and the challenges of his isolated life.
Well, without reading the 'a2 short story', it's impossible to say for sure. But it might have a protagonist who is on a quest of some sort. There could also be a sidekick character who helps the main character. Maybe there's an antagonist that creates obstacles for the protagonist to overcome. For example, if it's a fantasy short story, the main character could be a wizard and the antagonist a dark sorcerer.