Redemption is another theme. Given her villainous origin in the original series, a lot of fanfiction writers like to explore the idea of Female Buu trying to make up for her past wrongdoings. This can involve her helping the Z - fighters in their battles or trying to become a more positive force in the Dragon Ball Z world.
Well, 'Female Buu in the Human World' is quite popular too. This one focuses on Female Buu's experiences when she gets stranded in the human world. She has to learn about human emotions and ways of life, which leads to some really funny and heartwarming moments in the story.
One possible scenario could be Satan trying to train Buu to become a 'good' fighter in the sense of human values. He might introduce Buu to things like sportsmanship, which would be really funny considering Buu's nature. Buu might initially be confused but then start to adapt in his own strange way.
Buu the Demonkin was a character in the Dragon Ball series, not in Dragon Ball Super or any other works. Buu the Demonkin first appeared in the fourth game of the Dragon Ball series, Dragon Ball Z: Buu. He was a very powerful villain with the ability to transform into both human and demon forms.
There are no such inappropriate 'Straight Shota' stories in the official Dragon Ball Z canon. Dragon Ball Z mainly focuses on epic battles, power-ups, and the adventures of Goku and his friends to protect the Earth from various villains.
Dragon Ball Z is both anime and manga. The anime was adapted from the manga and they share the same story and characters, but presented in different mediums.