A really interesting plot point could be the training she receives from Sesshomaru. He could teach her his combat techniques, and she could combine them with her magic. This would make her a very formidable opponent. And there might be a plot where other characters from both universes are either in awe of her or jealous of her combined powers, leading to various sub - plots and conflicts within the story.
Well, this fanfiction is an interesting crossover concept. Lily Potter from the Harry Potter universe being the daughter of Sesshomaru from Inuyasha is quite a wild idea. It might involve a lot of world - building to combine the magic of the Harry Potter world with the demon - filled world of Inuyasha. For example, how would Lily's magic interact with Sesshomaru's powers? Maybe she could have some unique abilities that are a blend of both her parents' traits.
In this fanfiction, it could be about a philosophical difference. Lily Potter might have a different view on how to deal with the threat of Voldemort. Dumbledore is often very strategic and calculating, while Lily could be more impulsive and driven by her emotions and motherly love. So, they could be at odds over how to train Harry or which allies to trust in the fight against the Dark Lord.
Another interesting plot could be that she is transported back in time to the era when her parents were at Hogwarts. She gets to see them as students, experience their school life, and maybe even has a chance to change some small events that could have a big impact on their future and her own present. This would be a great way to explore their relationships and the world of Hogwarts in a different time period.
One possible plot point could be the discovery of this relationship. Maybe Harry finds some hidden magical artifact or document that reveals the truth. Another could be the reaction of the wizarding world. Would they still see Harry as a hero or would they be suspicious of him? Also, Voldemort's reaction if he were to find out before his death could be interesting. He might try to use Harry for his own ends in a different way than in the original story.
One interesting plot point could be her struggle to control her chaotic powers. Since she's the daughter of chaos, she might have powers that are difficult to manage and this could lead to various challenges in the wizarding world. For example, she might accidentally cause magical disasters while trying to learn basic spells.
One interesting plot could be Lily's struggle with her identity. Being the daughter of Voldemort, she might constantly battle between the dark side that is in her blood and the good she has been taught. For example, she could be tempted by dark magic but resist it because of the friends she has made at Hogwarts.
A possible plot development is that the two worlds start to merge because of their connection. Harry Potter's presence as Sesshomaru's sister could be the catalyst for this. As the worlds merge, new species and magic could emerge. They would have to deal with the chaos that comes with it, like how different cultures and magic systems interact. There could also be a sub - plot about Harry Potter trying to find a way back to her own world while still fulfilling her role as Sesshomaru's sister in his world.
One possible plot could be that Sesshomaru somehow ends up in the wizarding world of Harry Potter. Maybe a magical portal or a powerful spell goes wrong. He then has to navigate this new world with its own set of rules and magic, and he might encounter Harry and his friends.
In the fanfiction, Lily would likely face a great deal of prejudice. The wizarding world would be very suspicious of her because of who her father is. This is different from the original Lily who was respected and loved. So, she would have to work hard to prove herself, which could lead to a more complex and hardened personality compared to the original.
Well, a likely plot point would be Harry's struggle with his identity. As the son of Aphrodite in a world of wizards, he might feel out of place. He could also have a special connection to magical creatures related to love or beauty. For instance, he might be able to communicate with unicorns in a unique way. And there could be a plot where he has to use his Aphrodite - related powers to save Hogwarts from a dark force that is immune to normal magic but vulnerable to love - based powers.