One possible storyline could be Harry's struggle to accept his elven heritage. He might initially be confused or even ashamed, but then come to embrace it. Another could be that his elven side gives him unique magical abilities that help him in his battles against Voldemort. For example, he could have enhanced senses or a natural affinity for certain types of magic.
A possible story could start with Harry always feeling a bit different from the other wizards. As he uncovers that he is half - elf, he begins to explore his elven roots. He might find that his elven heritage makes him an outcast in some wizarding circles, but also gives him access to a different kind of magic. He could then use this new magic to fight against the pure - blood supremacist ideas in the wizarding world. Along the way, he might meet other half - elves or elves who guide him on his journey to fully understand and use his dual nature to make the wizarding world a more inclusive place.
Well, a storyline might involve Harry discovering his half - elf status through some mysterious event or person. Maybe he finds an old family heirloom that reveals his elven connection. Then, he could go on a journey to learn more about his elven side. This could lead him to elf communities where he learns their ways, magic, and culture. And as he becomes more in - touch with his elven half, it could change his relationships with his friends at Hogwarts. Some might be accepting, while others could be jealous or fearful of his newfound powers.
The allure of 'Harry Potter' half - elf fanfiction lies in the mystery it can bring. Half - elves are not part of the original lore in a big way, so writers can be very creative. For example, they could create a half - elf character who has a secret power that helps Harry in his fight against Voldemort.
A lot of 'Harry Potter' half - elf fanfiction might focus on their relationship with magic. Since elves have their own form of magic and wizards have theirs, a half - elf could have a blend. They might be able to perform spells in a different way, perhaps more instinctively like elves, which would make for some really interesting plotlines in fanfiction.
One possible storyline could be Naruto as an elf trying to fit into the ninja world while still having his elf heritage. He might face discrimination from some who don't understand his different nature.
Another storyline could be that Harry is alone as he tries to break a curse that has been placed on him during the Goblet of Fire events. The curse is making him see things that aren't there and is slowly draining his magic. Since he doesn't know who to trust, he tries to find a cure by himself. He travels to different parts of Hogwarts and even outside the school grounds in search of answers, all while feeling the loneliness of being on his own.
Another idea is that Hermione gets influenced by a dark magic book that she thought was just a regular old magic theory book. The book slowly plants ideas in her head that Harry's power is too dangerous and must be curbed. As a result, she might start to use hexes on Harry in a misguided attempt to keep the peace at Hogwarts.
Well, perhaps Harry is magically transported to the realm of the dark elves. There, he has to learn their ways and magic in order to survive. He could befriend some of the dark elves who are outcasts in their own society, and together they try to change the perception of the dark elves in the wider magical world. It could also involve a battle where Harry uses his new - found knowledge of dark elf magic to defend both the wizarding world and the dark elf world from a common enemy.
One possible plotline could be that Harry, as a Wood Elf, discovers new magical abilities related to nature that are different from his normal wizarding powers. He might use these to fight against Voldemort in a more nature - based way, like using the power of the forest to create barriers or traps.
In some fanfictions, there could be a situation where Thanos is actually related to an ancient dark magic in the Harry Potter universe. Harry has to figure out this connection and use it to his advantage. Maybe Thanos is after a powerful magical artifact in the wizarding world that he believes will enhance the power of the Infinity Stones. Harry and his friends then have to protect this artifact while also trying to defeat Thanos, which could lead to a series of epic battles and magical duels.
Maybe Harry gets assigned to a special project at Gringotts. For example, to help relocate a very dangerous magical item from one vault to another. Along the way, he has to face various challenges like magical traps and other creatures that guard the vaults. This could lead to a series of adventures as he tries to complete the task.
One possible storyline could be Harry's struggle to prove his innocence while in Azkaban. Maybe he discovers some dark secrets within the prison walls that are related to a larger threat to the wizarding world. Another could be his attempts to escape and the friends he makes or enemies he encounters during the process.