One plotline could be that they are forced to work together on a dangerous magical project. During this time, they start to see each other in a new light and fall in love, which eventually leads to having a son.
Maybe there's a prophecy that their son will be the key to saving the wizarding world. So, they come together, initially reluctantly, but over time develop feelings and have a child as part of the prophecy's fulfillment. It could also involve them facing opposition from both the Gryffindor and Slytherin sides because of their relationship.
One possible plotline could be Hermione's search for a magical cure. She could travel to different parts of the wizarding world, seeking out ancient spells or potions that might heal her. Along the way, she might face various challenges and obstacles, like dark wizards who want to stop her from finding a cure because they see her as a threat to their power.
A possible plotline is that Kisame left behind a child (Naruto) before his death. Naruto is then raised in Konoha, but he has strange dreams and instincts that he doesn't understand. As he gets stronger, he starts to show abilities that are not typical of Konoha - style ninja. When he finds out about Kisame being his father, he decides to explore the Akatsuki's side of the story. He could try to understand why his father was part of such a group. Along the way, he might meet characters who knew Kisame and learn more about his father's past, which in turn helps him understand his own place in the ninja world.
I'm not sure of a specific fanfiction on this. But you could try searching on popular fanfiction websites like Fanfiction.net or Archive of Our Own. Just type in 'Hermione has Blaise son' in the search bar and see what comes up.
It could be that Hermione has a secret life as a part - time Animagus. She has been able to transform into an animal without anyone in Hogwarts knowing. She uses this ability to explore places she couldn't reach as a human, or to spy on the Death Eaters or other threats to the wizarding world. And she keeps it a secret because Animagus without permission can get into a lot of trouble in the wizarding society.
Well, perhaps there could be a plotline where the wizarding world reacts to the revelation. Some might be suspicious of Hermione because of her father's past as a Death Eater. This could lead to her facing discrimination or having to prove herself more than ever. On the other hand, there could be a group of people who see her as a symbol of hope, as Regulus was someone who turned away from the Dark Side. Also, Hermione might start to have dreams or visions related to her father, guiding her on a new path or leading her to discover something important about the wizarding world that was previously unknown.
One possible plotline could be Hermione's discovery of her true parentage. Maybe she finds a hidden letter or a magic - bound memory that reveals the truth. This would send her into a state of shock and confusion as she tries to reconcile her own values with the fact that her mother is Bellatrix, a known Death Eater.
One possible plotline could be Ash discovering his true heritage. He might start having strange dreams or visions related to Sir Aaron, which lead him on a quest to find out more. Along the way, he could meet characters who knew his father and learn about his father's past deeds.
In a fanfiction with this premise, a possible plotline is that Anko uses her connections to get Naruto into a special training program that focuses on stealth and assassination, which are areas she is more familiar with. This could put Naruto in a different position within the village hierarchy. Another plotline could be that Naruto discovers some long - hidden secrets about Anko's past that have a direct impact on his own identity. Maybe there are secrets related to his father or some powerful ninja clans. This could lead to a journey of self - discovery for Naruto, all while dealing with the unique relationship he has with Anko as his mother.
Well, a plotline could involve Red trying to redeem Giovanni. Since he is his son, he might feel a sense of obligation to turn his father's life around. Or perhaps Red has to hide his identity from his friends and other trainers, fearing their reactions. He could also be on a quest to find out why Giovanni became evil in the first place, all while dealing with his own Pokemon training journey.
One possible plotline could be that Harry discovers the truth slowly. At first, he might notice strange similarities between himself and Bellatrix or some unexplained magical abilities that seem to link him to her. This discovery could throw him into an identity crisis as he has always thought of himself as an orphan with no real family other than the Dursleys.