In some fanfics, Harry might be able to tell Fred and George apart by their different interests within the story. For example, Fred could be more interested in potion - making experiments that are a bit on the wild side, while George is more into the business side of their joke shop plans. So when they talk about their hobbies or future plans, Harry can distinguish between them. Also, their sense of humor might be slightly different. Fred might crack a certain type of joke more often, like those related to magical creatures in a really absurd way, while George prefers jokes about Hogwarts professors. Through these nuances in their personalities, Harry is able to tell them apart.
Maybe Harry notices some small physical differences. For example, one of them might have a slightly different hair part or a unique freckle pattern.
One possible way is through their body language. For instance, Fred might stand with his left foot forward more often, while George has a habit of leaning to the right when he's standing still. Harry, being observant, picks up on these little quirks.
It could be that Percy pays attention to their individual interests within the fanfiction. If one of them has a particular hobby or passion that the other doesn't share as strongly, that could be a clue for Percy. Also, perhaps their interactions with other characters differ slightly. Fred might be more likely to tease a certain character, while George has a different way of relating to that same character.
Maybe she notices their different mannerisms. For example, George might be a bit more reserved while Fred is more outgoing. Hermione is very observant, so she could pick up on small details like how they talk, their facial expressions when they're joking or serious.
Yes, there could be various fanfics involving these characters in the Harry Potter universe. Fanfic writers often create unique stories centered around popular characters like Fred, George and Harry, exploring different plotlines, friendships, and adventures that might not be part of the original books.
Another plot point might be that the twins are actually quite amazed that Harry can tell them apart. This could lead to a closer bond between Harry and the twins, and they start to involve him more in their secret schemes because they trust him with this special knowledge.
It could show that Percy is more perceptive than the others think. Often in stories, Percy is seen as a bit of a stickler, but this ability to tell the twins apart might indicate he has a deeper understanding of people.
The relationship develops in a way that they understand each other's limitations better. George, being carried, realizes that he can count on Fred in difficult situations. Fred, on the other hand, gets to see George in a more vulnerable state. This newfound understanding makes them communicate more openly. They start to plan their future business ideas with more cooperation, knowing that they can support each other through any challenges that come their way in the wizarding world.
Harry might initially be a bit embarrassed, especially if there are other people around in the Gryffindor common room or the hallways of Hogwarts. But as the tickling continues, he'd let go and just enjoy the moment. Fred and George would be egging each other on, trying to see who can make Harry laugh the most. And they'd be really proud of themselves for coming up with such a fun prank.
I'm not sure specifically as there could be many different takes on such a fanfic. It might involve some sort of conflict or negative situations among Harry, Fred and George. Maybe they face criticism or difficult challenges within the fictional world created in the fanfic.