Perhaps it focuses on Eleven's own journey of self - discovery during this time. She might feel different and start to explore more about her femininity. It could also show how she copes with the hormonal changes and the emotions that come with getting her period.
The fanfiction could explore the reactions of the other characters in the Stranger Things universe. Joyce might step in as a mother figure, providing comfort and guidance. Hopper, on the other hand, could be initially awkward but then try his best to be there for Eleven. It could also delve into how Eleven's new situation affects her relationships with the boys, like Dustin and Lucas, and how they all grow from this experience.
One possible plot could be Bulla's initial confusion and fear when she first gets her period. She might try to hide it from her family at first, not fully understanding what's happening. Then perhaps Bulma discovers it and has a mother - daughter talk with her, explaining the biological process and reassuring her.
It could be about how Temari deals with the physical and emotional changes. Maybe she tries to hide it at first, fearing it might affect her ninja duties.
In a 'Mulan Gets Her Period' fanfiction, perhaps the story could focus on how the other female soldiers in the camp, if there are any, support Mulan. They could form a sisterly bond over this shared experience, and together they might find ways to make things easier for all of them during that time of the month, like creating a more private and comfortable space.
It could be about Tenten dealing with the new experience of getting her period while also trying to maintain her ninja training. Maybe she has to hide it from her male teammates at first out of embarrassment.
It could be about Lily's friends supporting her during this new experience. Maybe they bring her comfort items like warm tea and chocolate.
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.
One possible plot could be Amy Rose dealing with the physical discomfort. For example, she might struggle to keep up with her usual activities like running around or fighting bad guys. She could also face some embarrassment at first if she accidentally leaks or has to deal with cramps in public. Her friends might notice her being a bit off and try to help, but not fully understand what she's going through until she explains it to them.
One possible plot could be Sakura initially being embarrassed and not knowing how to handle it. Her friends, like Ino and Hinata, notice her discomfort and come to her support. They help her understand what's happening and give her practical advice on dealing with the physical and emotional aspects of getting her period.
The plot might involve Amy Rose's search for supplies when she gets her period. In the Sonic universe, this could be an adventure in itself. She may have to venture into an unknown area to find something suitable. Along the way, she meets other female characters who help her. This not only becomes a story about her dealing with her period but also about female camaraderie and empowerment within the Sonic world.
Well, it could be about Annabeth learning to deal with this new aspect of her life while still being in the middle of her adventures. Maybe she has to quickly figure out how to manage it in a world full of monsters and quests.