Friendship. Harry is their friend, and they care about him. Just like any good friends would, they want to keep him safe from harm.
One reason could be that they see Harry as a powerful ally. They know his skills and abilities, and they want to be on his side.
One reason could be that they played a particularly mischievous prank on her that went too far. For example, if they made her late for an important exam or meeting with a professor by using one of their wild magical inventions. Hermione, being a stickler for rules and academic achievement, might lose her temper and hex them in retaliation.
There's a fanfiction where Harry, Fred, and George are mates and they go on an adventure in the Forbidden Forest to find a rare magical creature. Along the way, they face various challenges like dodging dangerous plants and outsmarting other magical beings. It's a really exciting read as it shows their friendship and how they rely on each other's strengths.
In some fanfictions, they could be seen as soulmates in a platonic sense. Their strong bonds of friendship and the adventures they share might be interpreted as a form of soulmate - like connection.
One scenario could be when other students in Hogwarts try to bully Harry. Fred and George might use their pranks to divert the bullies' attention or make them look foolish, thus protecting Harry. For example, if someone tries to hex Harry in a corridor, they could quickly set off a dungbomb near the attacker, causing chaos and allowing Harry to escape.
One great 'Harry Potter' fanfiction with Harry, Fred, and George is 'The Twins' Pranks and Potter's Plight'. In it, Harry gets involved in the twins' wildest pranks at Hogwarts, leading to all sorts of hilarious and heart - warming adventures. It really shows the strong bond between them.
There's this fanfiction titled 'The Bond of Harry, Fred, and George'. It's popular because it delves into the deeper emotional connection between them. It shows how they support each other through tough times, like when Harry is haunted by Voldemort's presence. Fred and George use their humor and creativity to lift Harry's spirits and help him face his fears.
Maybe Harry notices some small physical differences. For example, one of them might have a slightly different hair part or a unique freckle pattern.
In some fanfictions, creative liberties are taken and it could be possible for George and Fred to be written as Harry's father. However, this is completely different from the original Harry Potter canon where James Potter is Harry's father.
One popular 'fred and george x harry fanfiction' is 'The Twins' Prank on Harry'. It's full of their mischievous adventures together. Another could be 'Fred, George and Harry's Hogwarts Escapades' which shows their unique bond at Hogwarts. There's also 'When Fred and George Met Harry' which explores how their relationship began.