It depends on what you mean by 'real'. If you're asking if it's based on actual events, I'm not sure. Maybe it's fictional or inspired by some elements of reality.
Greta is partially based on a true story. The filmmakers likely incorporated real-life elements and added fictional elements to make the story more engaging and cinematic.
Greta Thunberg's real story is one of remarkable activism. She, as a young girl, was deeply concerned about the lack of action on climate change. She began her activism journey with simple yet powerful gestures like sitting outside the parliament with a sign. Her message spread like wildfire across the globe, inspiring millions of young people to take to the streets and demand change from their governments. She has also faced criticism but has remained steadfast in her mission, becoming a prominent voice in the climate change conversation.
They often have detailed settings. For example, in 'The Pillars of the Earth' by Ken Follett, the medieval building of the cathedral is described in great detail, making the historical period come alive.
Alucard is significant as he represents power and mystery. His long existence gives him a depth that is alluring in the fanfiction. Seras, on the other hand, is important as she is the new - comer to the vampire world. She is a bridge between the human world and the vampire world, which makes her character development interesting. Together, they create a dynamic where old and new vampire cultures collide and interact.
Alucard in such fanfiction is often depicted as extremely powerful yet loyal to Integra. He has his dark and mysterious allure, with his vampire abilities being a major part of his character. For instance, his shape - shifting and superhuman strength are often showcased in the stories.