I'm afraid I have no idea about the main characters in this 'Summer of 58 game story'. It could be a group of kids, or maybe some adults with different personalities and goals, but without more knowledge of the story, it's impossible to be certain.
I'm not familiar with this particular 'Indian Summer Story', but perhaps the main characters are a family. The father could be a farmer who is busy with the final harvest during the Indian summer. The mother might be preparing for the upcoming winter while also enjoying the warm days. And the children could be exploring the outdoors, full of wonder at the beauty of the season.
The main characters are Tom and Summer. Tom is a hopeless romantic who falls deeply in love with Summer.
Since I'm not familiar with the 'A Summer to Remember' short story, the main characters could be typical of a summer - themed story. There might be a young protagonist, perhaps a teenager. There could also be friends or family members that play important roles, like a best friend who goes on adventures with the main character, or a wise grandparent who imparts some valuable life lessons during that summer.
I don't know as I haven't read this 'once in a summer full story'. So I can't tell who the main characters are.
Nikki is likely one of the main characters. She often takes center stage in Love Nikki stories.
It could be a teenager who is trying to escape from the boredom of summer through reading. There might also be a librarian or a teacher who plays an important role in guiding the character's reading choices. The librarian could introduce the character to new and exciting books, while the teacher could have planted the seed of love for reading in the character's mind in the first place.
Without having read the 'Sissy Summer School Story', we can only guess. Sissy is surely a main character. There could be a group of friends such as a boy who has a crush on Sissy or a girl who is jealous of her. There might also be an older student or a mentor - type figure who helps Sissy navigate the challenges of summer school, whether it's academic difficulties or social problems.
I'm not familiar with the details of 'Summer Time Saga Story' so I can't name the main characters precisely. But generally in a summer - themed story, there could be characters like a group of friends planning a road trip for the summer. There might be a love interest that one of the friends meets during their travels. And there could also be an antagonist, maybe someone who tries to spoil their summer fun, like a strict parent who doesn't want their child to go on adventures or a local bully in a summer town.
I'm not sure as the title doesn't give much away directly. But it could be a young person as summer reading is often associated with students.
There's Margot, a girl who has memories of the sun from Earth. She's a bit of an outcast among the other children on Venus. The other children, though not named individually for the most part, play a big role as well. They are the ones who bully Margot because of her difference, and their actions drive the story forward.