A possible plotline is that the older brother, having graduated from Hogwarts before Hermione, has a lot of connections in the wizarding world. When Hermione starts getting involved in the fight against the Dark Lord, he uses these connections to protect her. He might get her access to powerful protective spells or magical items that are not easily available. He could also be a bit of a maverick and not fully trust Dumbledore. So when Hermione is blindly following Dumbledore's orders, the brother steps in to make sure she's not being led into unnecessary danger. For instance, if Dumbledore sends Hermione on a dangerous mission, the brother might try to find an alternative way to achieve the same goal without putting her in harm's way.
First, his character could start off as a bit of an enigma. Maybe he has been away from Hermione for a while, and when he returns, he realizes how much she needs protection. As the story progresses, he could show his protective side more and more. He might be a strong wizard, but also have a soft heart, especially when it comes to Hermione. He could be developed as someone who is well - respected in the wizarding community for his own achievements, and uses that status to shield Hermione. For instance, if she's wrongly accused of something, he uses his influence to clear her name. He could also have a bit of a temper when it comes to those who threaten Hermione, which adds an interesting dimension to his character.
Another plotline might be exploring Naruto's past more deeply. Maybe there are secrets about his parents that were never fully revealed in the original. In the fanfiction, he could discover something new about his father's time as Hokage or his mother's Uzumaki heritage that changes his perspective on his own powers and responsibilities.
One possible plotline could be that Hermione meets the older man in a magical research setting. He is a well - respected wizard in his field, and at first, they bond over their shared love for ancient magic spells. As time goes on, Hermione discovers his kind heart beneath his serious exterior, and their relationship slowly develops into love. They face challenges like age - gap - related misunderstandings from friends and family, but they overcome them through their strong connection.
Often, he is brave. Just like Harry himself, he doesn't shy away from danger when it comes to protecting his younger brother. For instance, he might stand up to Voldemort's followers without hesitation.
One possibility could be that in this fanfiction, there is a lot of initial awkwardness. Hermione, being Ron's friend, might have some pre - conceived notions about his older brother. Maybe she's intimidated at first because she's used to Ron, and the older brother seems more mature or different in some way.
Yes, there are some out there. You can start by looking on fanfiction websites like Archive of Our Own or Fanfiction.net. Just search for the exact phrase 'Harry is Hermione's older brother' in their search bars and you'll likely find a variety of stories with different plotlines and interpretations.
In many fanfictions, Remus might be protective of Hermione because he sees her great potential and intelligence. He could also feel a sense of duty as an older, more experienced wizard. Additionally, he may have witnessed some of the hardships she has faced at Hogwarts and wants to shield her from further harm.
In fanfiction, Harry might be protective of Hermione because of their deep friendship. They've been through so many dangerous adventures together in the original series. Harry values Hermione's intelligence and loyalty, and he doesn't want to see her get hurt. It could also be that in some fanfiction, there are new threats or situations that make him feel the need to be extra protective.
One great fanfiction could be 'The Brotherly Bond'. In it, Harry's older brother is always there to shield him from the Dursleys' abuse and the threats in the wizarding world. He teaches Harry spells early on and helps him build confidence.
One possible plotline could be Hermione getting involved in the Cullen family's vampire world and using her magic to help them in some way. Maybe she discovers a new spell that can protect them from their enemies.