zuko learns about his grandfather

He might learn about hidden magical talents in his family. For example, perhaps there were ancestors who could communicate with magical creatures in a unique way that was lost over time.

They might be similar in appearance. For example, they could have the same eye color or the shape of their nose.

One anime that comes to mind is 'Spirited Away'. Although not directly about a boy and his grandfather, it has elements of family and a young boy-like character, Chihiro, going through an adventure. His relationship with the kind锅炉爷爷 (Kamaji), who could be seen as an elder figure like a grandfather, is interesting. Kamaji is a bit gruff but has a soft heart and helps Chihiro in the spirit world.

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.

His grandfather could be a very strict and traditional ninja. He might have high standards for Naruto in terms of ninja skills and discipline.

The book 'Battle Break's Strongest Villain' met the requirements. The main character, Hun Tianchen, was the young clan leader of the Hun clan. His father was Hun Tiandi. I recommend this book to you, I hope you like this fairy's recommendation, muah ~😗😋

It's possible that his ancestors were related to some of the more mysterious families in the wizarding world, like the Lovegoods. Maybe they shared certain magical abilities or eccentricities. They could also be linked to the Blacks, which would mean he has a connection to that complex family tree full of dark and light wizards.

One possible plot twist could be that his heritage is linked to an enemy he thought was unrelated. So he has to reevaluate his views on the whole conflict.

The plot might involve Zuko losing his scarf. Aang then makes it his mission to find it for his friend. Along the way, they encounter various obstacles and characters from their past. This could lead to some deep conversations between Aang and Zuko about their friendship, their past mistakes, and how far they've come. As Aang searches for the scarf, he also discovers more about Zuko's insecurities and what the scarf represents to Zuko in terms of his identity.

Let me recommend a supernatural novel to you. It's called "The Soul of the Tomb Spirit". It's about an orphan who lived with his grandfather since he was young. His grandfather was an inheritor of catching ghosts. Although their physical bodies had died, their souls lived on in the human world. As he grew up, he explored all kinds of supernatural events. I hope you like this fairy's recommendation. Muah ~😗