The main characters are clearly America and Maxon.
America, who is the central figure going through the experience of getting her period. And Maxon, whose room she is in when this occurs. Their relationship, whether it's platonic or romantic, will be at the heart of the story as they deal with this situation together.
Well, it could be a story about America facing an embarrassing and unexpected situation in Maxon's room when she gets her period. Maybe it shows her initial panic and how she tries to handle it discreetly, while Maxon might show understanding and support.
Obviously, America would be the main character. There could also be some sort of selection committee or judges as supporting characters.
Obviously Caroline herself is the main character. Her mother is likely to be in it as well, as mothers often play an important role in a girl's first period experience, like giving advice and support.
It could be about a character named America going through a series of events during a special selection process. Maybe it's a competition where she has to prove herself in different ways.
I think Hinata would be a great supporting character. Hinata is very empathetic and kind. She would be there to listen to Sakura's concerns and offer her quiet support. Also, Kakashi could play an interesting role. He might not fully understand what's going on but still offer his general wisdom and support to Sakura in his own unique, laid - back way.
A female mentor or an older female friend could be important. This character could provide a different perspective. She might come from a different background or have unique experiences related to menstruation. She could offer Arya wisdom and guidance that her family members might not, like how to handle social situations when on her period or how to embrace this new part of her femininity.
Her best friend could be a main character. This friend might be the first one Lily tells about getting her period and could offer practical advice like which pads are the most comfortable.
Eleven herself is the central character. Her friends like Mike, Dustin, and Lucas would likely be involved. Mike, being her close friend and having a special bond with her, would be there for her. Dustin and Lucas would probably offer their own unique forms of support.
Bulma would likely be a main character. As Bulla's mother, she would play a crucial role in guiding and supporting Bulla through this new stage. She could share her own experiences and wisdom with her daughter.
Ino might also be involved. She and Tenten are friends, and Ino could be there to offer emotional support, sharing her own experiences or just being a good friend during this new phase in Tenten's life.