Since we don't have all the details of 'the shirt of a happy man story', it's hard to say exactly. However, there must be at least two main characters. One is the protagonist, who is not happy and is in search of the shirt of a happy man. The other could be the person who is thought to be happy, the owner of the shirt. There might also be other characters like people the protagonist meets during his search, but without more information, we can only assume these two as the main ones.
In the 'the shirt of a happy man story', the most obvious main character is the man who is on a quest to find the shirt of a happy man. He is likely dissatisfied with his own state of happiness and believes that this special shirt will change his situation. Then there is likely a character who is considered the happy man, whose shirt is so desired. There could also be side characters such as villagers or townspeople that the man seeking the shirt encounters during his journey. But the two central characters are the seeker of the shirt and the owner or supposed owner of the happy man's shirt.
Often, there is a king or a rich man as one of the main characters. He is the one who is unhappy and sets out to find the happy man's shirt.
In the 'Happy Man's Shirt Story', the main character is surely the man associated with the shirt. He could be a simple farmer who one day stumbles upon this extraordinary shirt. Or he could be a weary traveler who is given the shirt as a gift. The story could detail his experiences with the shirt, how it affects his mood, his relationships with others. It could show how this one item, the shirt, becomes a significant part of his identity and his journey towards happiness.
The moral could be that true happiness doesn't come from external possessions like a shirt. Happiness is an internal state that can't be bought or obtained simply through material things.
Since I don't have the full story, it's hard to say exactly. However, if it's a typical short story, the main character would be the 'happy man' of course. He could be surrounded by other characters such as a wise old man who gives him advice on happiness, or a young child whose innocence makes him reflect on his own happiness. There could also be a love interest, a woman who plays a role in his emotional state and his perception of happiness.
The 'the happy man's shirt story' is often a folktale. It might be about a king or someone in power who is seeking the secret to true happiness. They are told that a happy man's shirt holds the key. So they set out on a journey to find this happy man and his shirt. Along the way, they discover that happiness isn't as simple as possessing a physical object like a shirt.
I'm not sure exactly as the details of the 'Happy Man's Shirt Story' can vary. It could be about a man who has a special shirt that brings him happiness, perhaps with some magical or sentimental qualities to it.
Since I don't know the exact 'the big blue shirt story', I can't say for sure who the main characters are. But it could be the person who owns the big blue shirt, perhaps a friend or family member who is associated with the shirt in some way.
The main character is of course the happy man. He is likely the focus of the story, and through his experiences, the story unfolds. There may be secondary characters, perhaps his friends or family, who play a role in his life. They could be the ones who either support or question his state of happiness. For example, they might notice something different about him that he himself has not fully realized, which then leads to further exploration of his happiness in the story.
I'm not sure who the main character specifically is in this novel. But it's likely the 'man in the orange shirt' himself. Since the title centers around this person, it's reasonable to assume he plays a major role in the story.
Since we don't have more details about the 'happy man story', it could be an ordinary man. Just a regular person who has an extraordinary journey towards happiness.