One possible plotline could be her journey to discover her true powers. As the daughter of Poseidon, she might have the ability to control water in unique ways, like creating massive tidal waves or even communicating with sea creatures. She could face challenges from other mythological beings who are jealous of her powers.
Another plotline could involve her relationship with other demigods. Maybe she falls in love with a son of Zeus and they have to deal with the fact that their fathers are rivals. Or she could form a strong friendship with a daughter of Athena and together they solve mysteries in the mythological world.
It could involve Poseidon's battles with other gods for power or his attempts to protect the seas from various threats.
One plotline could be that Naruto is chosen by Poseidon to be his champion in the human world. He is given special powers to protect the seas and their secrets from those who would misuse them. Naruto, with his determination, uses these new powers to fight off evil forces that are threatening the ocean's balance.
One possible plotline could be that Poseidon, under some sort of dark influence, publicly disowns Percy. This would leave Percy feeling completely alone and betrayed, as his father's support had been a major part of his identity. He might then have to struggle not only with the regular threats he faces but also with the emotional turmoil of his father's betrayal. Another plotline could involve Poseidon stealing Percy's powers for some self - serving reason, perhaps to gain more power in the pantheon, forcing Percy to find new ways to survive and fight.
One possible plotline could be Sakura's struggle with her identity. She might be torn between her loyalty to Konoha, where she grew up, and her new - found connection to Orochimaru. Another could be her discovery of Orochimaru's secrets and how they relate to her own abilities. Maybe she has some hidden jutsu or powers that are a result of her relation to Orochimaru.
One common characteristic is a strong connection to water. She can usually sense the ebb and flow of it, and might feel a sense of calm when near large bodies of water. For example, she could be walking on a beach and suddenly know that a storm is coming far out at sea.
A really interesting plot could involve her exploring a new part of the ocean that has been hidden for centuries. In this journey, she might encounter new sea deities that Poseidon has never mentioned. She could also find herself in a conflict between two groups of sea - creatures, and she has to use her wits and powers to bring peace. Along the way, she could learn more about her father's past and secrets that he has been keeping from her, which could change her relationship with him and her view of herself as a demigod.
One possible plotline could be that Gintoki and Tsukuyo have a daughter who inherits their unique traits. Maybe she has Gintoki's laid - back but strong - willed nature and Tsukuyo's fighting skills. And the story could revolve around her growing up in the same world as her parents, facing the various challenges and making friends and enemies along the way.
Well, a plotline could involve Bella being hunted by some sort of demon hunters who sense her devilish origin. Meanwhile, she tries to understand why her father was involved in hiding her true identity all this time. She could also have an internal struggle between the good in her, which was influenced by her human upbringing, and the evil tendencies that come with being the devil's daughter. There might be a prophecy about her that she has to either fulfill or fight against, and this could be intertwined with the Twilight universe's existing supernatural elements.
Another plotline could be Hermione exploring her dark magic heritage. She might be tempted to learn some of the spells that Bellatrix was known for, but then struggle with the moral implications. This internal conflict could be a major part of the story, as she tries to balance her Gryffindor values with her new - found connection to a dark past.
Perhaps Ezra gets transported back in time and encounters a younger Palpatine. Ezra tries to prevent Palpatine from turning to the dark side, but in the process, he has to face the challenges of the political and social environment of that time. This could lead to a complex story of moral dilemmas and power struggles.