There could be various storylines involving Heather as an older sister in Harry Potter fanfiction. Maybe she's a Gryffindor like Harry and helps him out in his adventures, or she could be a Slytherin with her own complex motives.
Her magical abilities can play a big role in her development. If she has a special gift, like being able to communicate with magical creatures in a way no one else can, it can shape her character. She could be seen as an outcast by some in the wizarding world because of this strange ability, but she uses it to her advantage. For instance, she might get help from a powerful magical creature to save Harry from a dangerous situation.
She could play a protective role towards Harry. Since she's older, she might feel a strong sense of responsibility for her younger brother. For instance, she could be the one who first discovers some of the secrets about Voldemort's return and warns Harry.
To develop her character, start with her appearance. She could have the same green eyes as Harry but with long, flowing red hair like their mother. Then, think about her personality. She might be more headstrong and confident than Harry, having grown up a bit earlier. For instance, she could be the type to stand up to bullies without hesitation, even when they are older and more powerful wizards.
She could be a half - blood like Harry. Maybe her mother was a muggle - born witch and her father was a pure - blood wizard. This mixed heritage could give her a unique perspective on the wizarding world's issues regarding blood purity.
One possible scenario in this fanfiction could be that Harry, with his magical abilities, enters the Naruto universe and is reborn as Naruto's older sister. He could use his magic in unique ways within the ninja world, perhaps using spells to enhance his ninja skills or to protect Naruto from early on. This would bring a whole new dynamic to the Naruto story as the presence of someone with such different powers and a different upbringing would change the way Naruto grows and faces challenges.
One example could be a fanfiction where Harry Potter's older sister is a powerful witch who has been secretly protecting Harry all along. She might use her advanced magical skills to thwart Voldemort's plans in ways that the original story didn't explore. For instance, she could have been working behind the scenes to gather information on the Death Eaters and pass it on to the Order of the Phoenix.
In a fanfiction, Harry Potter's older sister could have been a key figure in the fight against Voldemort all along. She could have been secretly trained by some powerful wizards in hiding. For example, she might have been mentored by Dumbledore in a very covert way, learning advanced magic that even Harry didn't know about at first. This would give her a unique role in the overall battle against the Dark Lord.
One possible plot could be that the older sister is a powerful witch who has been secretly protecting Harry all along. Maybe she has her own network of allies within the wizarding world that she uses to keep an eye on him. For example, she could be in contact with some of the more reclusive magical creatures who provide her with information about Voldemort's movements.
In many of these fanfictions, the theme of empowerment is prominent. The protective older sister is usually a strong - willed and powerful witch. She uses her powers not for self - gain but to protect Harry. For example, she may be an expert in defensive magic and use her skills to fend off attackers. Also, the theme of growth is there. As she protects Harry, she also grows as a person, learning more about herself and the world around her. Additionally, the theme of friendship often intertwines with her protection of Harry, as she forms alliances with his friends to better safeguard him.