He might be more confident. Since he already has some knowledge of runes, he can participate more actively in classes related to ancient magic or spells. For instance, in a runes class, he could answer questions quickly and gain the respect of his peers and teachers.
Yes, there are some. One fanfiction might have Harry learning runes from an old wizard in his neighborhood. This gives him an edge when he finally gets to Hogwarts as he can already understand some of the ancient magic symbols. It adds an interesting layer to his character, showing his thirst for knowledge even before Hogwarts.
Surely. Fanfic authors love to take existing characters and give them new abilities or skills to explore different storylines. Harry being good at runes can open up many interesting plot possibilities. For example, he could use his rune knowledge to solve mysteries or protect Hogwarts in ways not shown in the original books. You can also try reaching out to other Harry Potter fans on social media platforms to see if they know of any such fanfics.
Often, you might find runes in hidden locations or as rewards for defeating powerful foes. Sometimes, they could also be gifted by mysterious beings or discovered in ancient ruins.
One possible fanfic could be where Harry discovers a hidden connection between Runes and Arithmancy that helps him in his battle against Voldemort. Maybe he finds ancient runes that, when decoded using arithmancy principles, reveal a powerful spell or a secret weapon.
Yes, it can be. If the author has a deep understanding of the Harry Potter universe and runes, it can make for an interesting read. It might offer unique interpretations of magic and characters, adding new layers to the familiar story.