In this fanfic, it could be that the grandfather has a unique way of training Harry for the battles he'll face. Maybe he has a special connection to some powerful magical creatures that he uses to toughen Harry up. Also, the grandfather could be protecting Harry from certain dark forces that are after him in a more discreet way compared to Dumbledore in the original story.
Well, perhaps the grandfather could be teaching Harry all kinds of magic that his parents didn't have the chance to. He might introduce Harry to a different side of the wizarding world, full of old family secrets and forgotten spells.
One possible plot could be that the grandfather was estranged from Harry's parents for some reason, but now that he has Harry, he's determined to make up for lost time. He could be showing Harry how to navigate the wizarding society's politics, as he himself might have been a key figure in the past. He'd pass on his wisdom about dealing with different wizarding families and how to spot true friends from false ones, all while Harry is growing up under his care.
It could be an old and powerful wizard who has been in hiding for years. Maybe he was a friend of Dumbledore's but had some differences with him, so he stayed away from the main events in Harry's life until now.
One possible plotline could be that Harry's grandfather imparts unique magical knowledge to him that he doesn't get at Hogwarts. Maybe it's an old - fashioned kind of magic that has been forgotten over time. This could give Harry an edge in dealing with the dark forces.
One possible plot could be that his grandfather, perhaps a powerful but reclusive wizard, trains Harry in unique magic from a young age. Harry might grow up with a different set of values and skills compared to the original story. He could have a closer bond with the wizarding world's older traditions.
His grandfather could be a very strict and traditional ninja. He might have high standards for Naruto in terms of ninja skills and discipline.
Well, it could be that Harry grows up learning the ways of the mob. Maybe he's involved in their illegal activities from a young age, like running errands for them. He might develop a tough exterior and a sense of loyalty to the mob members who raised him.
Well, it could be that Harry is raised in a world where cologne has some sort of magical property. Maybe the scent of a particular cologne is used to protect him or give him special powers. For example, the cologne might be made from rare magical ingredients and whenever Harry wears it, he can blend into the Muggle world more easily because it masks his wizardly aura.
Well, perhaps in this fanfic, Iskandr takes Harry in at a young age after some kind of incident in the wizarding world. Iskandr could raise Harry in a place far from Hogwarts, exposing him to different cultures and magics. As Harry grows, he starts to combine the knowledge he gets from Iskandr with his own natural talent, and they might even go on adventures together to fight against dark forces that are a threat not only to the wizarding world but also to the broader world that Iskandr is aware of.
Well, perhaps the story could involve Harry learning the goblin ways of magic and combat. He might grow up with a unique perspective on the wizarding world, seeing things from the goblins' point of view. Maybe he'd have a special bond with goblin characters and use their knowledge to outwit his enemies later in life.
Maybe Harry realizes he made some mistakes in his past and decides to go back in time to correct them. He could try to save his loved ones who died in the original story.
It could be that his parents were trying to protect Harry in a really messed - up way. They might have thought that by 'betraying' him, like sending him away or making him seem like an outcast, they could keep him safe from a much greater threat. Maybe they knew some prophecy about Harry and thought this was the only way to ensure his survival. They might have made a deal with some dark force, believing they could outwit it in the end but ended up being seen as traitors by Harry and others.