Hermione could be the main character. She's always been curious about knowledge, so she might be the one to stumble upon the idea of a DNA test in the wizarding world. She could use her intelligence to figure out how to perform the test and then discover something amazing about her own family's magical lineage.
Neville could also be the main character in such a fanfiction. Neville, who has always been underestimated, takes the DNA test. The results show that he has a powerful and rare magical ability hidden in his genes. This new - found knowledge gives him the confidence to step up and become a key figure in defending Hogwarts against new threats.
It could be a new student at Hogwarts. A transfer student from a different wizarding school who comes with a mystery. They take the DNA test and it reveals that they have a special connection to Hogwarts itself, like being related to one of the founders in a very convoluted way. This new discovery then becomes the focus of their adventures at Hogwarts.
Well, one possible plot could be that a new spell is discovered which can analyze a wizard's DNA. The main character, perhaps a young Hogwarts student, decides to take the test out of curiosity. It reveals some unexpected heritage, like being related to a powerful but long - forgotten wizard family. This could lead to new adventures as they try to uncover the secrets of their newly - discovered family past.
It could be a dark wizard who wants to steal Harry's inheritance for his own gain.
It's hard to say for sure without reading it, but likely Harry Potter himself would be a main character. He's the central figure in the original series, so it would make sense for him to be involved in an inheritance test. Hermione Granger could also be a main character as she's always been very involved in the magical mysteries.
I'm not sure specifically as it's a fanfiction. But it could include some of the original Harry Potter characters like Harry himself, Hermione, or Ron, as their heritages are important in the main series. It might also introduce new characters who are central to the heritage test storyline.
Perhaps the author might introduce new characters as the main focus. For instance, a young wizard from a different house who has a special gift for magic but struggles with the magic test due to some personal issues. This character could befriend some of the existing characters and together they face the challenges of the magic test. Another possibility is that an older wizard or witch who is an examiner in the magic test becomes a main character, and the story could explore their backstory and how they came to be in that position.
It could be Naruto himself. Adding divine dna to his character would make him even more powerful and could lead to new and exciting storylines.
It could be a new student at Hogwarts who has a natural talent for dealing with beasts. This student could be from a family that has always had an affinity for magical creatures but has kept it a secret until now.
A Muggle - born mouse. It could be a unique concept where a mouse from the Muggle world somehow ends up in the wizarding world. It would be interesting to see how it copes with all the magic and the rules of the wizarding society.
Neville could also be a main character in this type of fanfiction. He could stumble upon a clockwork - related mystery in the Hogwarts gardens. Maybe there are some clockwork - powered plants that are acting strange. Neville, with his new - found confidence, takes it upon himself to solve the mystery and in the process, uncovers a deeper secret about Hogwarts and its connection to clockwork magic.
A young witch who was raised by dragons after being lost in the mountains as a child. She returns to the wizarding world as a dragonspeaker and has to adapt to human society while also using her skills to protect both the dragons and the wizards. She could be the main character as she bridges the gap between the two worlds.