Another plot could be that Percy has to reveal his daughter's existence due to some unforeseen circumstances. Maybe there is a prophecy that only his daughter can fulfill. So, he has to bring her out of hiding and train her to face the challenges that lie ahead. This could lead to a whole new adventure where they both learn more about each other and their powers.
Perhaps the plot could involve Percy's daughter discovering her true identity on her own. She might start to notice strange things about herself or her father's behavior. For example, she could find some old letters or artifacts that hint at her origin. And as she digs deeper, she gets closer to the truth, which also brings her closer to the dangerous world her father has been shielding her from.
The mother could also be a completely new character created specifically for this fanfiction. She might be from a different realm or have some special powers. And her relationship with Percy could be a complex one, filled with secrets and misunderstandings that led to the situation of having a secret daughter.
One possibility could be that Percy has been leading a double life. Maybe he had a relationship in the past that he kept hidden, and now the existence of the child is coming to light. The story could explore how he copes with this new reality and how it affects his relationships with his friends and family.
One possible storyline could be that Naruto discovers he has a daughter in a very unexpected way. Maybe she was hidden away by an enemy for some dark purpose. As Naruto uncovers the truth, he has to deal with his own guilt for not knowing about her and also protect her from those who would still do her harm.
One possible plot could be that Edward's daughter discovers she has a special power, just like her father. She struggles to control it at first and Edward has to guide her. They go on a journey together to find a way to fully master her power, facing various challenges along the way.
Well, it could be about Bella having a secret power that she has to hide from the world in the fanfiction. Maybe she can communicate with animals secretly and is afraid of being seen as a freak.
One possibility is that Sakura has a secret family history in the fanfiction. There could be a hidden lineage that gives her special abilities or responsibilities. She has to keep it a secret because it might put her or her loved ones in danger, and she's constantly struggling to balance this hidden part of her life with her normal life.
Well, it could be about Luffy having a secret power that no one in the Straw Hat crew knows about. Maybe it's a power that he got from a mysterious encounter and he's keeping it a secret to protect his crew from potential danger.
Well, perhaps the story could revolve around Draco's daughter being sorted into a different house than Slytherin. This causes a stir in the Malfoy family. Draco has to deal with his own disappointment at first but then realizes that his daughter's happiness and growth are more important. He then starts to learn about the other houses and their values through his daughter.
One possibility is that Bella's secret could be about her having some special power that she has been hiding from everyone in Forks. Maybe she can communicate with animals secretly, which adds a new layer to her relationship with the werewolves.
Maybe in the fanfiction, the father of the baby is a mystery. Clary has to deal with the speculation and rumors around who the father could be while also taking care of her little one. It could add a lot of drama to the story as she might face accusations or unwanted attention.