There should not be any such fanfiction. The Harry Potter franchise has a wide range of positive and creative fanfiction, focusing on things like character development, new magical adventures, and relationships within the magical world in a proper and respectful way. This kind of inappropriate idea does not fit into the normal scope of fanfiction for the series.
Well, it might seem a bit odd at first. Snape has such a complex relationship with Harry in the original story. But on the other hand, fanfiction can offer different perspectives on the characters. Maybe he likes it because it shows different interpretations of the wizarding world he's a part of.
Well, perhaps in this fanfiction, Harry discovers a magical bug species in the Forbidden Forest. He becomes fascinated with their ability to change colors according to the magic around them. He starts to study them secretly, using his invisibility cloak. This could lead to a whole new adventure where he has to protect these bugs from dark wizards who want to use them for evil potions.
Well, it could be. Since the Dark Arts in the Potter universe are generally bad things like curses and black magic. Harry has always been on the side of good, fighting Voldemort and his Death Eaters who use the Dark Arts. So for him to like Dark Arts fanfiction might make some people think it goes against his nature. But on the other hand, fanfiction often explores different aspects of characters, so it might just be an interesting and perhaps controversial exploration.
Well, I'm sure there exists some. Fanfiction allows for a great deal of creative liberty. But when it comes to 'Harry Potter likes boys', it may face some criticism from more conservative fans. After all, the original story doesn't really hint at such a relationship. But in the fanfiction world, authors can take the characters and put them in various scenarios, so it's possible that you can find some works that explore this idea.
One popular fanfiction idea could be Harry Potter, tired of being constantly in dangerous situations, decides to focus more on his studies. He could be exploring ancient magic spells in the library, collaborating with Hermione on some really complex potions theory, and impressing his professors with his newfound dedication to learning.
Yes, there are some. You can check out fanfiction websites like FanFiction.net or Archive of Our Own. Just search for 'Harry Potter likes trains' in their search bars and you'll likely find a variety of stories. Some might be about Harry's fascination with the Hogwarts Express or other magical trains in the wizarding world.
In some Harry Potter fanfiction, it is possible for Harry to create sentient magic. Fanfic writers often explore unique magical concepts and abilities, and this could be one of them.
There is a fanfiction titled 'The Scholar Harry'. In this, Harry becomes obsessed with learning after realizing how much knowledge can be a power against Voldemort. He spends his free time in the Room of Requirement, which transforms into a vast library for him. He studies advanced magic, including some that are not taught in regular classes.
In this fanfiction concept, the story would be turned on its head. The whole mystery around Harry's parents and his connection to Snape would be reimagined. Their shared heritage as twins could lead to new magical abilities that they discover together. The Hogwarts houses might even treat them differently. For instance, Snape being a Slytherin and Harry being a Gryffindor in the original, but as twins, there could be a whole new dynamic within the houses. And the final battle with Voldemort could be fought in a completely different way with their combined strength and new - found relationship.