Not having read the'sing to the stars story', it's all speculation. It could be that the main character is a child. Children are often full of wonder and imagination. This child might believe that the stars are listening to their songs. And there could be a magical creature in the story, like a star - fairy or something, who is attracted by the child's singing and becomes part of the story.
It's possible that there is a special animal character in the story. Maybe a little bird that also loves the stars and joins the child in singing to them. The bird could be a guide for the child, showing the best places to look at the stars and how to sing in a way that the stars seem to respond.
I don't know the 'in the stars story' well enough to say who the main characters are. It could be a young girl who has a special connection to the stars.
The 'sing to the stars story' could be a very imaginative and magical one. It might tell of a world where the stars are living entities. The protagonist, perhaps a lonely singer, discovers that the stars can hear their songs. As they sing, the stars respond in some way, like shining brighter or sending down a soft glow. It could also be a story about how music has the power to bridge the gap between the earthly world and the celestial realm of the stars.
Some of the main characters include Anzu, who plays an important role in the idol world of the story. Then there's Trickstar's members like Hokuto Hidaka, Subaru Akehoshi, etc. They are key players in the story's idol - related events.
Maybe there are some heroic space adventurers who are at the center of the story. They could be the ones who first discover the plague among the stars and then take on the task of fighting it. There might also be some alien characters who are either victims of the plague or have some unique knowledge about it.
Since I don't know the exact 'seeing stars story', it's hard to say. It could be an individual who has an out - of - body experience and sees stars during it.
Since I don't know the specific'reach for the stars story', it's difficult to say. It could be a young and determined protagonist like a budding scientist or an adventurer.
I'm not sure as I don't know the details of 'All Stars Story', but they could be a group of talented individuals like singers, actors or athletes.
Perhaps the main characters are a young couple. In a story about love and creativity, the two of them could be involved in making paper stars together, with each star representing a moment in their relationship. It's also possible that the main character is an artist who uses paper stars as part of their art, and the story follows their creative process.
The main characters are likely the Sailor Guardians like Sailor Moon, Sailor Mercury, Sailor Mars, etc.